-------------------------------                 -------------------------------
CUSIP No. 63910B102                             Page 1 of 15 pages
-------------------------------                 -------------------------------

                                                OMB APPROVAL
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549




                                  SCHEDULE 13D
                    Under the Securities Exchange Act of 1934
                                (Amendment No. _)


                                 Nautilus, Inc.
                                ----------------
                                (Name of Issuer)


                                  Common Stock
                                  ------------
                         (Title of Class of Securities)


                                    63910B102
                                    ---------
                                 (CUSIP Number)

                    Direct any Notices and Communications to:
                    -----------------------------------------
                              George J. Mazin, Esq.
                                   Dechert LLP
                              30 Rockefeller Plaza
                               New York, NY 10112

                                February 13, 2006
                                ----------------
             (Date of Event which Requires Filing of this Statement)

If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  that is the subject of this  Schedule  13D, and is filing this
schedule because of ss.ss. 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the
following box. [X]


The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act.






                                                                               
-------------------------------                                                         -------------------------------
CUSIP No. 63910B102                                                                     Page 2 of 15 pages
-------------------------------                                                         -------------------------------


        --------- ------------------------------------------------------------------------------------------------------
                  NAME OF REPORTING PERSON
           1      SS. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                  ENDOWMENT CAPITAL, L.P.
                  77-0621714
        --------- ------------------------------------------------------------------------------------------------------
                  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP     (a) [x]
           2                                                           (b) [ ]
        --------- ------------------------------------------------------------------------------------------------------
                  SEC USE ONLY
           3
        --------- ------------------------------------------------------------------------------------------------------

           4      SOURCE OF FUNDS

                  WC
        --------- ------------------------------------------------------------------------------------------------------

           5      CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)     [ ]

        --------- ------------------------------------------------------------------------------------------------------
                  CITIZENSHIP OR PLACE OF ORGANIZATION
           6
                  DELAWARE
        ----------------------- --------- ------------------------------------------------------------------------------
                                          SOLE VOTING POWER
                                   7
               NUMBER OF                  0
                SHARES          --------- ------------------------------------------------------------------------------
          BENEFICIALLY OWNED              SHARED VOTING POWER
                BY  EACH           8
               REPORTING PERSON           3,193,829
                 WITH           --------- ------------------------------------------------------------------------------
                                          SOLE DISPOSITIVE POWER
                                   9
                                          0
                                --------- ------------------------------------------------------------------------------
                                          SHARED DISPOSITIVE POWER
                                   10
                                          3,193,829
        ----------- ----------------------------------------------------------------------------------------------------
            11      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                    9.56%
        ----------- ----------------------------------------------------------------------------------------------------
            12      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES   [ ]

        ----------- ----------------------------------------------------------------------------------------------------
            13      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

                    9.56%
        ----------- ----------------------------------------------------------------------------------------------------
            14      TYPE OF REPORTING PERSON

                    PN
        ----------- ----------------------------------------------------------------------------------------------------








                                                                               
-------------------------------                                                         -------------------------------
CUSIP No. 63910B102                                                                     Page 3 of 15 pages
-------------------------------                                                         -------------------------------



        --------- ------------------------------------------------------------------------------------------------------
                  NAME OF REPORTING PERSON
           1      SS. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                  LONG DRIVE, L.P.
                  84-1639266
        --------- ------------------------------------------------------------------------------------------------------
                  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP     (a) [x]
           2                                                           (b) [ ]
        --------- ------------------------------------------------------------------------------------------------------
                  SEC USE ONLY
           3
        --------- ------------------------------------------------------------------------------------------------------

           4      SOURCE OF FUNDS

                  WC
        --------- ------------------------------------------------------------------------------------------------------

           5      CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)     [ ]

        --------- ------------------------------------------------------------------------------------------------------
                  CITIZENSHIP OR PLACE OF ORGANIZATION
           6
                  DELAWARE
        ----------------------- --------- ------------------------------------------------------------------------------
                                          SOLE VOTING POWER
                                   7
               NUMBER OF                  0
                SHARES          --------- ------------------------------------------------------------------------------
          BENEFICIALLY OWNED              SHARED VOTING POWER
                BY  EACH           8
               REPORTING PERSON           3,193,829
                 WITH           --------- ------------------------------------------------------------------------------
                                          SOLE DISPOSITIVE POWER
                                   9
                                          0
                                --------- ------------------------------------------------------------------------------
                                          SHARED DISPOSITIVE POWER
                                   10
                                          3,193,829
        ----------- ----------------------------------------------------------------------------------------------------
            11      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                    9.56%
        ----------- ----------------------------------------------------------------------------------------------------
            12      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES   [ ]

        ----------- ----------------------------------------------------------------------------------------------------
            13      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

                    9.56%
        ----------- ----------------------------------------------------------------------------------------------------
            14      TYPE OF REPORTING PERSON

                    PN
        ----------- ----------------------------------------------------------------------------------------------------








                                                                               
-------------------------------                                                         -------------------------------
CUSIP No. 63910B102                                                                     Page 4 of 15 pages
-------------------------------                                                         -------------------------------


        --------- ------------------------------------------------------------------------------------------------------
                  NAME OF REPORTING PERSON
           1      SS. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                  ENDOWMENT CAPITAL GROUP, LLC
                  77-0621719
        --------- ------------------------------------------------------------------------------------------------------
                  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP     (a) [x]
           2                                                           (b) [ ]
        --------- ------------------------------------------------------------------------------------------------------
                  SEC USE ONLY
           3
        --------- ------------------------------------------------------------------------------------------------------

           4      SOURCE OF FUNDS

                  AF
        --------- ------------------------------------------------------------------------------------------------------

           5      CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)     [ ]

        --------- ------------------------------------------------------------------------------------------------------
                  CITIZENSHIP OR PLACE OF ORGANIZATION
           6
                  DELAWARE
        ----------------------- --------- ------------------------------------------------------------------------------
                                          SOLE VOTING POWER
                                   7
               NUMBER OF                  0
                SHARES          --------- ------------------------------------------------------------------------------
          BENEFICIALLY OWNED              SHARED VOTING POWER
                BY  EACH           8
               REPORTING PERSON           3,193,829
                 WITH           --------- ------------------------------------------------------------------------------
                                          SOLE DISPOSITIVE POWER
                                   9
                                          0
                                --------- ------------------------------------------------------------------------------
                                          SHARED DISPOSITIVE POWER
                                   10
                                          3,193,829
        ----------- ----------------------------------------------------------------------------------------------------
            11      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                    9.56%
        ----------- ----------------------------------------------------------------------------------------------------
            12      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES   [ ]

        ----------- ----------------------------------------------------------------------------------------------------
            13      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

                    9.56%
        ----------- ----------------------------------------------------------------------------------------------------
            14      TYPE OF REPORTING PERSON

                    CO
        ----------- ----------------------------------------------------------------------------------------------------








                                                                               
-------------------------------                                                         -------------------------------
CUSIP No. 63910B102                                                                     Page 5 of 15 pages
-------------------------------                                                         -------------------------------


        --------- ------------------------------------------------------------------------------------------------------
                  NAME OF REPORTING PERSON
           1      SS. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                  ENDOWMENT CAPITAL GROUP, L.P.
                  04-377119
        --------- ------------------------------------------------------------------------------------------------------
                  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP     (a) [x]
           2                                                           (b) [ ]
        --------- ------------------------------------------------------------------------------------------------------
                  SEC USE ONLY
           3
        --------- ------------------------------------------------------------------------------------------------------

           4      SOURCE OF FUNDS

                  AF
        --------- ------------------------------------------------------------------------------------------------------

           5      CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)     [ ]

        --------- ------------------------------------------------------------------------------------------------------
                  CITIZENSHIP OR PLACE OF ORGANIZATION
           6
                  DELAWARE
        ----------------------- --------- ------------------------------------------------------------------------------
                                          SOLE VOTING POWER
                                   7
               NUMBER OF                  0
                SHARES          --------- ------------------------------------------------------------------------------
          BENEFICIALLY OWNED              SHARED VOTING POWER
                BY  EACH           8
               REPORTING PERSON           3,193,829
                 WITH           --------- ------------------------------------------------------------------------------
                                          SOLE DISPOSITIVE POWER
                                   9
                                          0
                                --------- ------------------------------------------------------------------------------
                                          SHARED DISPOSITIVE POWER
                                   10
                                          3,193,829
        ----------- ----------------------------------------------------------------------------------------------------
            11      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                    9.56%
        ----------- ----------------------------------------------------------------------------------------------------
            12      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES   [ ]

        ----------- ----------------------------------------------------------------------------------------------------
            13      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

                    9.56%
        ----------- ----------------------------------------------------------------------------------------------------
            14      TYPE OF REPORTING PERSON

                    PN
        ----------- ----------------------------------------------------------------------------------------------------






 

                                                                               
-------------------------------                                                         -------------------------------
CUSIP No. 63910B102                                                                     Page 6 of 15 pages
-------------------------------                                                         -------------------------------


        --------- ------------------------------------------------------------------------------------------------------
                  NAME OF REPORTING PERSON
           1      SS. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                  PHILIP TIMON
                  266-49-0215
         --------- ------------------------------------------------------------------------------------------------------
                  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP     (a) [x]
           2                                                           (b) [ ]
        --------- ------------------------------------------------------------------------------------------------------
                  SEC USE ONLY
           3
        --------- ------------------------------------------------------------------------------------------------------

           4      SOURCE OF FUNDS

                  AF
        --------- ------------------------------------------------------------------------------------------------------

           5      CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)     [ ]

        --------- ------------------------------------------------------------------------------------------------------
                  CITIZENSHIP OR PLACE OF ORGANIZATION
           6
                  UNITED STATES OF AMERICA
        ----------------------- --------- ------------------------------------------------------------------------------
                                          SOLE VOTING POWER
                                   7
               NUMBER OF                  0
                SHARES          --------- ------------------------------------------------------------------------------
          BENEFICIALLY OWNED              SHARED VOTING POWER
                BY  EACH           8
               REPORTING PERSON           3,193,829
                 WITH           --------- ------------------------------------------------------------------------------
                                          SOLE DISPOSITIVE POWER
                                   9
                                          0
                                --------- ------------------------------------------------------------------------------
                                          SHARED DISPOSITIVE POWER
                                   10
                                          3,193,829
        ----------- ----------------------------------------------------------------------------------------------------
            11      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                    9.56%
        ----------- ----------------------------------------------------------------------------------------------------
            12      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES   [ ]

        ----------- ----------------------------------------------------------------------------------------------------
            13      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

                    9.56%
        ----------- ----------------------------------------------------------------------------------------------------
            14      TYPE OF REPORTING PERSON

                    IN
        ----------- ----------------------------------------------------------------------------------------------------






-------------------------------                 -------------------------------
CUSIP No. 63910B102                             Page 7 of 15 pages
-------------------------------                 -------------------------------


ITEM 1.  (a).     Name of Issuer:  Nautilus, Inc.

                  (b). Address of Issuer's Principal Executive Offices:

                           1400 NE 136th Avenue
                           Vancouver, Washington 98684

                  (c).     Title of Class of Securities:  Common Stock

                  (d). CUSIP Number: 63910B102

ITEM 2.  This Statement is being filed jointly by each of the following persons

         (i)  Endowment  Capital,   L.P.,  is  a  Delaware  limited  partnership
("Endowment"),  which is engaged in the private  investment  fund business.  The
address of its  principal  business  office is 1105 North  Market  Street,  15th
Floor, Wilmington, DE 19801. Endowment has not, during the past five years, been
convicted in a criminal  proceeding of any nature whatsoever,  nor has Endowment
been a party to a civil  proceeding  of a  judicial  or  administrative  body of
competent jurisdiction of any nature whatsoever during the past five years;

         (ii) Long Drive,  L.P., a Delaware limited  partnership ("Long Drive"),
which is engaged in the private  investment  fund  business.  The address of its
principal business office is 1105 North Market Street,  15th Floor,  Wilmington,
DE 19801.  Long Drive has not,  during the past five years,  been convicted in a
criminal proceeding of any nature whatsoever, nor has Long Drive been a party to
a  civil  proceeding  of  a  judicial  or   administrative   body  of  competent
jurisdiction of any nature whatsoever during the past five years;

         (iii)  Endowment  Capital  Group,  LLC,  a Delaware  limited  liability
company,  which  serves as  general  partner  to  Endowment  and Long Drive (the
"General  Partner"),  and is engaged in the  business of managing  the  business
affairs of each.  The  address of its  principal  business  office is 1105 North
Market Street,  15th Floor,  Wilmington,  DE 19801. The General Partner has not,
during the past five  years,  been  convicted  in a criminal  proceeding  of any
nature  whatsoever,  nor  has  the  General  Partner  been a  party  to a  civil
proceeding of a judicial or administrative body of competent jurisdiction of any
nature whatsoever during the past five years;

         (iv) Endowment  Capital Group,  L.P., a Delaware  limited  partnership,
which serves as investment  manager to Endowment and Long Drive (the "Manager").
The address of its principal  business office is 1105 North Market Street,  15th
Floor,  Wilmington,  DE 19801.  The Manager has not, during the past five years,
been convicted in a criminal  proceeding of any nature  whatsoever,  nor has the
Manager been a party to a civil proceeding of a judicial or administrative  body
of competent  jurisdiction  and as a result of such proceeding was or is subject
to a  judgment,  decree  or final  order  enjoining  future  violations  of,  or
prohibiting or mandating activities subject to, federal or state securities laws
or finding any violation with respect to such laws,  during the past five years;
and

         (v) Mr.  Philip  Timon,  whose  business  address is 1105 North  Market
Street, 15th Floor,  Wilmington,  DE 19801, who serves as the managing member of
the General Partner and the managing




-------------------------------                 -------------------------------
CUSIP No. 63910B102                             Page 8 of 15 pages
-------------------------------                 -------------------------------

member of the Manager's  general  partner,  and in such capacity is  principally
responsible  for the  management  of the affairs of Endowment,  Long Drive,  the
General Partner and the Manager.  Mr. Timon has not, during the past five years,
been convicted in a criminal  proceeding of any nature  whatsoever,  nor has Mr.
Timon been a party to a civil proceeding of a judicial or administrative body of
competent  jurisdiction of any nature whatsoever during the past five years. Mr.
Timon is a United States citizen.

         Endowment,  Long Drive,  the General Partner,  the Manager,  and Philip
Timon are sometimes also referred to herein individually as a "Reporting Person"
and collectively as "Reporting Persons".

ITEM 3.  Source and Amount of Funds or Other Consideration.

         The   Reporting   Persons  have   invested  an   aggregate   amount  of
$35,820,943.66  (exclusive of brokerage  commissions)  in the  securities of the
Issuer  reported  hereunder.  Some of these funds were invested  directly in the
shares of the Issuer, and some were invested in put and call options with shares
of the Issuer underlying such options. The sources of the funds used to purchase
the shares of the Issuer held by the  Reporting  Persons and the options sold or
purchased  by the  Reporting  Persons  are  the  partnership  assets  of each of
Endowment and Long Drive,  representing the capital contributions of the General
Partner and each limited partner of Endowment and Long Drive  (including  Philip
Timon).

ITEM 4.  Purpose of Transaction.

         The  securities  of the  Issuer  reported  hereunder  by the  Reporting
Persons were  acquired as a long-term  investment in the Issuer by Endowment and
Long Drive.  In managing the  investment  portfolio of Endowment and Long Drive,
the  Manager  utilizes  a  fundamental,   research-driven  process  to  identify
companies as being  fundamentally  undervalued  and possessing the potential for
high growth. In implementing this process,  the Manager identified the Issuer as
a company satisfying its rigorous investment criteria.

         The Reporting  Persons  reserve the right to discuss  various views and
opinions  with respect to the Issuer and its  business  plans with the Issuer or
the members of its senior management.  The discussion of such views and opinions
may extend from  ordinary  day-to-day  business  operations  to matters  such as
nominees  for  representation  on  the  Issuer's  board  of  directors,   senior
management decisions and extraordinary business transactions.

         The  Reporting   persons  are  not   presently   engaged  in  plans  or
contemplating  proposals involving any of the items (b) through (j) of Item 4 of
Schedule 13D. However, the Reporting Persons may determine to engage in plans or
make proposals involving any such items in the future.


ITEM 5.  Interest in Securities of the Issuer.

      (a).     Aggregate shares held by each Reporting Person

               Endowment Capital, L.P.               3,193,829

               Long Drive, L.P.                      3,193,829




-------------------------------                 -------------------------------
CUSIP No. 63910B102                             Page 9 of 15 pages
-------------------------------                 -------------------------------





                  Endowment Capital Group, LLC(1)    3,193,829

                  Endowment Capital Group, L.P.(2)   3,193,829

                  Philip Timon(3)                    3,193,829

         Percentage of class:

                  Endowment Capital, L.P.            9.56%

                  Long Drive, L.P.                   9.56%

                  Endowment Capital Group, LLC       9.56%

                  Endowment Capital Group, L.P.      9.56%

                  Philip Timon                       9.56%

         (b).     Number of shares as to which such person has:

                  (1)      Sole power to vote or to direct the vote:

                  (i)      Endowment Capital, L.P.            0

                  (ii)     Long Drive, L.P.                   0

                  (iii)    Endowment Capital Group, LLC       0

                  (iv)     Endowment Capital Group, L.P.      0

                  (v)      Philip Timon                       0

                  (2)      Shared power to vote or to direct the vote:

                  (i)      Endowment Capital, L.P.            3,193,829

                  (ii)     Long Drive, L.P.                   3,193,829

                  (iii)    Endowment Capital Group, LLC       3,193,829


------------------------------
(1)      Endowment  Capital  Group,  LLC is the  General  Partner  of  Endowment
         Capital,  L.P. and Long Drive,  L.P., subject to the overall control of
         the managing member, Philip Timon.

(2)      Endowment  Capital Group,  L.P. is the investment  manager of Endowment
         Capital,  L.P. and Long Drive,  L.P., subject to the overall control of
         Philip  Timon,  the managing  member of its general  partner,  and thus
         could be deemed to share the power to vote and  dispose  or direct  the
         disposition of such Shares.

(3)      Philip Timon as the managing  member is deemed to possess a controlling
         interest in the general  partner of Endowment  Capital Group,  L.P. and
         thus  could be deemed to share the power to vote and  dispose or direct
         the disposition of such Shares.




-------------------------------                 -------------------------------
CUSIP No. 63910B102                             Page 10 of 15 pages
-------------------------------                 -------------------------------


              (iv)     Endowment Capital Group, L.P.      3,193,829

              (v)      Philip Timon                       3,193,829

              (3)      Sole power to dispose or to direct the disposition of:

              (i)      Endowment Capital, L.P.            0

              (ii)     Long Drive, L.P.                   0

              (iii)    Endowment Capital Group, LLC       0

              (iv)     Endowment Capital Group, L.P.      0

              (v)      Philip Timon                       0

              (4)      Shared power to dispose or to direct the disposition of:

              (i)      Endowment Capital, L.P.            3,193,829

              (ii)     Long Drive, L.P.                   3,193,829

              (iii)    Endowment Capital Group, LLC       3,193,829

              (iv)     Endowment Capital Group, L.P.      3,193,829

              (v)      Philip Timon                       3,193,829

         (c).  Transactions in Securities of the Issuer during the past 60 days.

         The following  transactions were effected on the open market during the
past 60 days (as  indicated in the  following  table,  certain of the  following
transactions were not direct  transactions in the securities of the Issuer,  but
rather,  were  transactions  in put and call  options  with shares of the Issuer
underlying such options):




-------------------------------                 -------------------------------
CUSIP No. 63910B102                             Page 11 of 15 pages
-------------------------------                 -------------------------------


         (c). Transactions in Securities of the Issuer during the past 60 days.

         The following transactions are purchases that were effected on the open
market during the past 60 days:


Reporting     Date      Transaction  Symbol   Description # of Shares Price per
Person                                                     or Units    Share or
                                                                        Unit ($)

Endowment     12/14/2005      SL      NLS      NLS shares   24,380   20.1024
Long Drive    12/14/2005      SL      NLS      NLS shares   13,620   20.1024
Endowment     12/27/2005      SL      NLS      NLS shares   3,399    19.0528
Long Drive    12/27/2005      SL      NLS      NLS shares   1,901    19.0528
Endowment     12/27/2005      SL      NLS      NLS shares   898      19.0021
Long Drive    12/27/2005      SL      NLS      NLS shares   502      19.0021
Endowment     12/28/2005      SL      NLS      NLS shares   4,361    18.9724
Long Drive    12/28/2005      SL      NLS      NLS shares   2,439    18.9724
Endowment     12/28/2005      SL      NLS      NLS shares   5,964    18.9656
Long Drive    12/28/2005      SL      NLS      NLS shares   3,336    18.9656
Endowment     12/29/2005      SL      NLS      NLS shares   5,066    19.0125
Long Drive    12/29/2005      SL      NLS      NLS shares   2,834    19.0125
Endowment     12/29/2005      SL      NLS      NLS shares   5,900    18.9738
Long Drive    12/29/2005      SL      NLS      NLS shares   3,300    18.9738
Endowment     1/6/2006        SL      NLS      NLS shares   1,352    19.1264
Long Drive    1/6/2006        SL      NLS      NLS shares   1,148    19.1264
Endowment     1/9/2006        SL      NLS      NLS shares   10,265   19.3529
Long Drive    1/9/2006        SL      NLS      NLS shares   5,735    19.3529
Endowment     1/10/2006       SL      NLS      NLS shares   3,210    19.4300
Long Drive    1/10/2006       SL      NLS      NLS shares   1,790    19.4300
Endowment     1/11/2006       SL      NLS      NLS shares   3,847    19.5637
Long Drive    1/11/2006       SL      NLS      NLS shares   2,153    19.5637
Endowment     1/12/2006       SL      NLS      NLS shares   22,461   20.8286
Long Drive    1/12/2006       SL      NLS      NLS shares   12,539   20.8286
Endowment     1/12/2006       SL      NLS      NLS shares   44,663   21.0035
Long Drive    1/12/2006       SL      NLS      NLS shares   24,937   21.0035
Endowment     1/18/2006       SL      NLS      NLS shares   219,461  13.9379
Long Drive    1/18/2006       SL      NLS      NLS shares   122,539  13.9379
Endowment     1/18/2006       SL      NLS      NLS shares   11,230   14.5469
Long Drive    1/18/2006       SL      NLS      NLS shares   6,270    14.5469
Endowment     1/19/2006       BY      NLS      NLS shares   30,931   14.0794
Long Drive    1/19/2006       BY      NLS      NLS shares   17,269   14.0794
Endowment     1/19/2006       BY      NLS+GC   Call NLS     3,530    1.4545
                                               Jul 15.00
Long Drive    1/19/2006       BY      NLS+GC   Call NLS     1,970    1.4545
                                               Jul 15.00
Endowment     1/19/2006       SS      NLS+SV   Put NLS      3,530    1.0091
                                               Jul 12.50
Long Drive    1/19/2006       SS      NLS+SV   Put NLS      1,970    1.0091
                                               Jul 12.50



-------------------------------                 -------------------------------
CUSIP No. 63910B102                             Page 12 of 15 pages
-------------------------------                 -------------------------------

Reporting     Date      Transaction  Symbol   Description # of Shares Price per
Person                                                     or Units    Share or
                                                                        Unit ($)

Endowment    1/19/2006      BY      OND+AC   Call NL         3,209     2.1444
                                             Jan 15.00
Long Drive   1/19/2006      BY      OND+AC   Call NLS        1,791     2.1444
                                             Jan 15.00
Endowment    1/19/2006      SS      OND+MV   Put NLS         3,209     1.5625
                                             Jan 12.50
Long Drive   1/19/2006      SS      OND+MV   Put NLS         1,791     1.5625
                                             Jan 12.50
Endowment    2/1/2006       SL      NLS+GC   Call NLS        2,567     2.5959
                                             Jul 15.00
Long Drive   2/1/2006       SL      NLS+GC   Call NLS        1,433     2.5959
                                             Jul 15.00
Endowment    2/2/2006       SL      NLS+GC   Call NLS          963      2.4500
                                             Jul 15.00
Long Drive   2/2/2006       SL      NLS+GC   Call NLS          537      2.4500
                                             Jul 15.00
Endowment    2/2/2006       SL      OND+AC   Call NLS       3, 209      3.0100
                                             Jan 15.00
Long Drive   2/2/2006       SL      OND+AC   Call NLS        1,791      3.0100
                                             Jan 15.00



-------------------------------                 -------------------------------
CUSIP No. 63910B102                             Page 13 of 15 pages
-------------------------------                 -------------------------------

ITEM 6.  Contracts,  Arrangements,   Understandings  or  Relationships  with
         Respect to Securities of the Issuer

         There are no contracts,  arrangements,  understandings or relationships
in place among any of the  Reporting  Persons with respect to the  Securities of
the Issuer.  The General Partner serves as the General Partner to both Endowment
and Long Drive.  The Manager serves as the investment  manager to both Endowment
and Long Drive.  Each of the General  Partner and the Manager are subject to the
overall  control of Philip Timon,  as managing member of the General Partner and
managing member of the general partner of the Manager,  and thus could be deemed
to share the power to vote and dispose or direct the disposition of such Shares.
Thus, the Reporting  Persons could be deemed a "group" pursuant to Rule 13d-1(k)
of Regulation 13D-G;  however, the Reporting Persons neither admit nor deny that
any such group exists. Nothing in this Schedule 13D shall be deemed an admission
by any of the Reporting Persons that such person is a "beneficial  owner" of the
securities covered by this Schedule 13D.




-------------------------------                 -------------------------------
CUSIP No. 63910B102                             Page 14 of 15 pages
-------------------------------                 -------------------------------


SIGNATURES

         After reasonable  inquiry and to the best of my knowledge and belief, I
certify that the information  set forth in this statement is true,  complete and
correct.


                                ENDOWMENT CAPITAL, L.P.

Date:  February 15, 2006        By:   /s/ Philip Timon
                                      -----------------------------------------
                                      Philip Timon,  managing member of
                                      Endowment Capital Group,  LLC,
                                      general partner

                                LONG DRIVE, L.P.

Date:  February 15, 2006        By:   /s/ Philip Timon
                                      -----------------------------------------
                                      Philip Timon,  managing member of
                                      Endowment Capital Group,  LLC,
                                      general partner

                                ENDOWMENT CAPITAL GROUP, LLC

Date:  February 15, 2006        By:   /s/ Philip Timon
                                      -----------------------------------------
                                      Philip Timon,  managing member

                                ENDOWMENT CAPITAL GROUP, L.P.

Date:  February 15, 2006        By:   /s/ Philip Timon
                                      -----------------------------------------
                                      Philip Timon,  managing member of
                                      Endowment Capital Management,  LLC,
                                      general partner

                                PHILIP TIMON

Date:  February 15, 2006        By:   /s/ Philip Timon
                                      -----------------------------------------




-------------------------------                 -------------------------------
CUSIP No. 63910B102                             Page 15 of 15 pages
-------------------------------                 -------------------------------


EXHIBIT 1 -- AGREEMENT OF JOINT FILING

         In accordance  with Rule 13d-1(k) under the Securities  Exchange Act of
1934, as amended,  the undersigned hereby agrees that the foregoing statement on
Schedule  13D is  filed  on  behalf  of each of the  undersigned  and  that  all
subsequent  amendments  to this  statement  on Schedule  13D,  shall be filed on
behalf of each of the  undersigned  without the  necessity of filing  additional
joint  acquisition  statements.  The undersigned  acknowledge that each shall be
responsible for the timely filing of such  amendments,  and for the completeness
and accuracy of the  information  concerning  him or it contained  therein,  but
shall not be  responsible  for the  completeness  and  accuracy  of  information
concerning the others, except to the extent that he or it knows or has reason to
believe that such information is inaccurate.

         IN WITNESS  WHEREOF,  the undersigned  hereby execute this Agreement on
the 15th day of February, 2006.


                                ENDOWMENT CAPITAL, L.P.

Date:  February 15, 2006        By:   /s/ Philip Timon
                                      -----------------------------------------
                                      Philip Timon,  managing member of
                                      Endowment Capital Group,  LLC,
                                      general partner

                                LONG DRIVE, L.P.

Date:  February 15, 2006        By:   /s/ Philip Timon
                                      -----------------------------------------
                                      Philip Timon,  managing member of
                                      Endowment Capital Group,  LLC,
                                      general partner

                                ENDOWMENT CAPITAL GROUP, LLC

Date:  February 15, 2006        By:   /s/ Philip Timon
                                      -----------------------------------------
                                      Philip Timon,  managing member

                                ENDOWMENT CAPITAL GROUP, L.P.

Date:  February 15, 2006        By:   /s/ Philip Timon
                                      -----------------------------------------
                                      Philip Timon,  managing member of
                                      Endowment Capital Management,  LLC,
                                      general partner

                                PHILIP TIMON

Date:  February 15, 2006        By:   /s/ Philip Timon
                                      -----------------------------------------