Document:

<PAGE>   1
                                                                     EXHIBIT 4.1

                               [Sunhawk.com Logo]

INCORPORATED UNDER THE LAWS OF
THE STATE OF WASHINGTON

This Certifies that _______________________________

is the record holder of _____________________

FULLY PAID AND NONASSESSABLE SHARES OF COMMON STOCK, NO PAR VALUE OF

                            Sunhawk.com Corporation

Transferable on the books of the Corporation by the Holder in person or by duly
authorized attorney upon surrender of this certificate properly endorsed. The
certificate is not valid until countersigned by the Transfer Agent and
registered by the Registrar.

WITNESS the facsimile seal of the corporation and the facsimile signatures of
its duly authorized officers.

Dated:

/s/ David M. Otto                                         /s/ Marlin J. Eller
----------------------           [corporate seal]         ----------------------
Secretary                                                 President and Chief
                                                          Executive Officer

The Corporation will furnish to any stockholder, upon request and without
charge, a statement of the powers, designations, preferences, and relative
participating, optional or other special rights of each class of stock or series
thereof and the qualifications, limitations or restrictions of such preferences
and/or rights, insofar as the same shall have been fixed, and of the authority
of the Board of Directors to designate any preferences, rights and limitations
of any wholly unissued series. Any such request should be directed to the
Secretary of the Corporation at the principal office of the Corporation.

     The following abbreviations, when used in the inscription on the face of
this certificate, shall be construed as though they were written out in full
according to applicable laws or regulations:

TEN COM - as tenants in common
TEN ENT - as tenants by the entireties
JT TEN - as joint tenants with right of survivorship
and not as tenants in common

UNIF GIFT MIN ACT - _____ Custodian _____ under Uniform Gifts To Minors Act

UNIF TRF MIN ACT - _____ Custodian (until age ____ under Uniform Transfers
to Minors Act _______

    Additional abbreviations may also be used though not in the above list.

FOR VALUE RECEIVED, ___________________ hereby sells, assign and transfer unto

PLEASE INSERT SOCIAL SECURITY OR OTHER

<PAGE>   2

IDENTIFYING NUMBER OF ASSIGNEE

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    (please Print or type name and address, including zip code of assignee)

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of the common stock represented by the within Certificate, and do hereby
irrevocably constitute and appoint

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to transfer the said stock of the books of the within named Corporation with
full power of substitution in the premises.

Dated:___________________

                                        ----------------------------------------

                                        ----------------------------------------
                                        NOTICE: the signatures to this
                                        assignment must correspond with the
                                        name(s) as written upon the face of the
                                        certificate in every particular, without
                                        alteration or enlargement or any change
                                        whatever.

Signature(s) Guaranteed

By
   ------------------------------------
THE SIGNATURE(S) MUST BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION (BANKS,
STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN
AN APPROVED MEDALLION SIGNATURE GUARANTEE PROGRAM), PURSUANT TO S.E.C. RULE
17Ad-15.<PAGE>   1

                                                                    EXHIBIT 10.7

                                 LOCK UP LETTER

Joseph Gunnar & Co., LLC
30 Broad Street, 12th Floor
New York, NY 10004

Ladies and Gentlemen:

        This letter is being delivered to you in connection with the proposed
Underwriting Agreement (the "Underwriting Agreement") between Sunhawk.com
Corporation, a Washington corporation (the "Company"), and you as representative
of the several underwriters (the "Underwriters") named in Schedule I thereto,
relating to an underwritten public offering (the "Offering") of 1,400,000 shares
of the Company's common stock, no par value (the "Common Stock") (including
210,000 shares of Common Stock subject to an option granted to the Underwriters
solely to cover over-allotments, if any).

        In order to induce you and the other Underwriters to enter into the
Underwriting Agreement with respect to the Offering, the undersigned, intending
to be legally bound, hereby agrees, for the benefit of the Company, you and the
other Underwriters, that for a period of twenty-four (24) months following the
effective date of the Registration Statement relating to the Offering (the
"Lock-up Period"), the undersigned will not, without the prior written consent
of the Representative (as defined in the Underwriting Agreement), directly or
indirectly, offer, offer to sell, sell, contract to sell, grant any option for
the purchase of, assign, transfer, pledge, hypothecate or otherwise encumber or
dispose of any beneficial interest in ("Transfer") any Common Stock or
securities convertible into or exchangeable for or evidencing any right to
purchase or subscribe for any shares of Common Stock (either pursuant to Rule
144 of the regulations under the Securities Act of 1933, as amended, or
otherwise) either beneficially owned by the undersigned as of the effective date
of the Registration Statement or acquired by the undersigned during the Lock-up
Period as a result of the exercise of options (the "Securities").
Notwithstanding the foregoing, the undersigned may effect a Transfer of shares
of Common Stock as a bona fide gift or gifts, provided that the undersigned
provides prior written notice of such gift or gifts to you and the donee or
donees thereof agree to be bound by the restrictions set forth herein.

        In the event that the Representative consents to a Transfer, the
undersigned hereby agrees that, during the Lock-up Period, the execution of any
order relating to a Transfer of Securities shall be placed through the
Representative.

<PAGE>   2

        To enable the Company and the Underwriters to enforce the aforesaid
covenants, the Undersigned hereby consents to the placing of legends on the
Securities and stop-transfer orders with the transfer agent of the Company's
securities with respect to any of the Securities registered in the name of or
beneficially owned by the undersigned.

        This Agreement shall be governed by and construed and enforced in
accordance with the laws of the State of New York without giving effect to the
choice of law or conflict of laws principles.

        If for any reason the Underwriting Agreement shall be terminated prior
to the Closing Date (as defined in the Underwriting Agreement), the agreement
set forth above shall be likewise terminated at such time.

Dated: January 26, 2000

                                        -------------------------------------
                                        Signature

                                        -------------------------------------
                                        Printed Name

                                        -------------------------------------
                                        Print Address

                                        -------------------------------------
                                        Print Social Security Number or
                                        Taxpayer I.D. Number

<PAGE>   3

        To enable the Company and the Underwriters to enforce the aforesaid
covenants, the Undersigned hereby consents to the placing of legends on the
Securities and stop-transfer orders with the transfer agent of the Company's
securities with respect to any of the Securities registered in the name of or
beneficially owned by the undersigned.

        This Agreement shall be governed by and construed and enforced in
accordance with the laws of the State of New York without giving effect to the
choice of law or conflict of laws principles.

        If for any reason the Underwriting Agreement shall be terminated prior
to the Closing Date (as defined in the Underwriting Agreement), the agreement
set forth above shall be likewise terminated at such time.

Dated: Aug. 19, 1999

                                        /s/ Marlin J. Eller
                                        -------------------------------------
                                        Signature

                                        Marlin J. Eller
                                        -------------------------------------
                                        Printed Name

                                        -------------------------------------
                                        Print Address

                                        -------------------------------------
                                        Print Social Security Number or
                                        Taxpayer I.D. Number

<PAGE>   4

        To enable the Company and the Underwriters to enforce the aforesaid
covenants, the Undersigned hereby consents to the placing of legends on the
Securities and stop-transfer orders with the transfer agent of the Company's
securities with respect to any of the Securities registered in the name of or
beneficially owned by the undersigned.

        This Agreement shall be governed by and construed and enforced in
accordance with the laws of the State of New York without giving effect to the
choice of law or conflict of laws principles.

        If for any reason the Underwriting Agreement shall be terminated prior
to the Closing Date (as defined in the Underwriting Agreement), the agreement
set forth above shall be likewise terminated at such time.

Dated: Aug. 19, 1999

                                        /s/ David W. Gray
                                        -------------------------------------
                                        Signature

                                        David W. Gray
                                        -------------------------------------
                                        Printed Name

                                        -------------------------------------
                                        Print Address

                                        -------------------------------------
                                        Print Social Security Number or
                                        Taxpayer I.D. Number

<PAGE>   5

        To enable the Company and the Underwriters to enforce the aforesaid
covenants, the Undersigned hereby consents to the placing of legends on the
Securities and stop-transfer orders with the transfer agent of the Company's
securities with respect to any of the Securities registered in the name of or
beneficially owned by the undersigned.

        This Agreement shall be governed by and construed and enforced in
accordance with the laws of the State of New York without giving effect to the
choice of law or conflict of laws principles.

        If for any reason the Underwriting Agreement shall be terminated prior
to the Closing Date (as defined in the Underwriting Agreement), the agreement
set forth above shall be likewise terminated at such time.

Dated: Aug. 19, 1999

                                        /s/ Mary E. McConney
                                        -------------------------------------
                                        Signature

                                        Mary E. McConney
                                        -------------------------------------
                                        Printed Name

                                        -------------------------------------
                                        Print Address

                                        -------------------------------------
                                        Print Social Security Number or
                                        Taxpayer I.D. Number

<PAGE>   6

        To enable the Company and the Underwriters to enforce the aforesaid
covenants, the Undersigned hereby consents to the placing of legends on the
Securities and stop-transfer orders with the transfer agent of the Company's
securities with respect to any of the Securities registered in the name of or
beneficially owned by the undersigned.

        This Agreement shall be governed by and construed and enforced in
accordance with the laws of the State of New York without giving effect to the
choice of law or conflict of laws principles.

        If for any reason the Underwriting Agreement shall be terminated prior
to the Closing Date (as defined in the Underwriting Agreement), the agreement
set forth above shall be likewise terminated at such time.

Dated: Aug. 19, 1999

                                        /s/ Brent Mills
                                        -------------------------------------
                                        Signature

                                        Brent Mills
                                        -------------------------------------
                                        Printed Name

                                        -------------------------------------
                                        Print Address

                                        -------------------------------------
                                        Print Social Security Number or
                                        Taxpayer I.D. Number

<PAGE>   7

        To enable the Company and the Underwriters to enforce the aforesaid
covenants, the Undersigned hereby consents to the placing of legends on the
Securities and stop-transfer orders with the transfer agent of the Company's
securities with respect to any of the Securities registered in the name of or
beneficially owned by the undersigned.

        This Agreement shall be governed by and construed and enforced in
accordance with the laws of the State of New York without giving effect to the
choice of law or conflict of laws principles.

        If for any reason the Underwriting Agreement shall be terminated prior
to the Closing Date (as defined in the Underwriting Agreement), the agreement
set forth above shall be likewise terminated at such time.

Dated: Aug. 19, 1999

                                        /s/ Judy McOstrich
                                        -------------------------------------
                                        Signature

                                        Judy McOstrich
                                        -------------------------------------
                                        Printed Name

                                        -------------------------------------
                                        Print Address

                                        -------------------------------------
                                        Print Social Security Number or
                                        Taxpayer I.D. Number

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