<PAGE>

                                                                    Exhibit 10.4


                                 VENGINES, INC.

                           2000 STOCK INCENTIVE PLAN

                               (Effective 6/1/00)
<PAGE>

                                VENGINES, INC.

                           2000 STOCK INCENTIVE PLAN

                           (Effective June 1, 2000)


                               TABLE OF CONTENTS
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SECTION 1.  PURPOSE................................................................................................      1

SECTION 2.  DEFINITIONS............................................................................................      1

   (a)   "Award"...................................................................................................      1
   (b)   "Board"...................................................................................................      1
   (c)   "Change in Control".......................................................................................      1
   (d)   "Code"....................................................................................................      2
   (e)   "Committee"...............................................................................................      2
   (f)   "Common-Law Employee".....................................................................................      2
   (g)   "Common Stock"............................................................................................      2
   (h)   "Company".................................................................................................      2
   (i)   "Consultant"..............................................................................................      2
   (j)   "Disability"..............................................................................................      2
   (k)   "Exchange Act"............................................................................................      2
   (l)   "Exercise"................................................................................................      2
   (m)   "Exercise Price"..........................................................................................      2
   (n)   "Fair Market Value".......................................................................................      2
   (o)   "Incentive Stock Option"..................................................................................      3
   (p)   "Key Contributor".........................................................................................      3
   (q)   "Non-Employee Director"...................................................................................      3
   (r)   "Nonstatutory Option".....................................................................................      3
   (s)   "Offeree".................................................................................................      3
   (t)   "Option"..................................................................................................      3
   (u)   "Optionee"................................................................................................      3
   (v)   "Parent"..................................................................................................      3
   (w)   "Participant".............................................................................................      3
   (x)   "Plan"....................................................................................................      3
   (y)   "Preferred Stock".........................................................................................      3
   (z)   "Purchase Price"..........................................................................................      3
   (aa)  "Restricted Share"........................................................................................      4
   (bb)  "Service".................................................................................................      4
   (cc)  "Stock Award Agreement"...................................................................................      4
   (dd)  "Stock Option Agreement"..................................................................................      4
   (ee)  "Stock Purchase Agreement"................................................................................      4
   (ff)  "Subsidiary"..............................................................................................      4
   (gg)  "10% Stockholder".........................................................................................      4
   (hh)  "Vesting".................................................................................................      4
   (ii)  "W-2 Payroll".............................................................................................      4

SECTION 3.  ADMINISTRATION.........................................................................................      4

   (a)   Committees of the Board...................................................................................      4
   (b)   Committee Procedures......................................................................................      5
   (c)   Authority of the Committee................................................................................      5
   (d)   Committee Liability.......................................................................................      5

SECTION 4.  ELIGIBILITY............................................................................................      5
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                                 VENGINES, INC.

                            2000 STOCK INCENTIVE PLAN

<TABLE>
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SECTION 5.  STOCK SUBJECT TO PLAN..........................................................................      5

   (a)   Basic Limitation..................................................................................      5
   (b)   Additional Shares.................................................................................      6

SECTION 6.  TERMS AND CONDITIONS OF GRANTS OR SALES........................................................      6

   (a)   Stock Purchase Agreement..........................................................................      6
   (b)   Duration of Offers................................................................................      6
   (c)   Purchase Price....................................................................................      6
   (d)   Restrictions on Transfer of Common Stock..........................................................      6

SECTION 7.  ADDITIONAL TERMS AND CONDITIONS OF RESTRICTED SHARES...........................................      7

   (a)   Form and Amount of Award..........................................................................      7
   (b)   Vesting...........................................................................................      7
   (c)   Effect of Change in Control.......................................................................      7
   (d)   Voting Rights.....................................................................................      7

SECTION 8.  TERMS AND CONDITIONS OF OPTIONS................................................................      7

   (a)   Stock Option Agreement............................................................................      7
   (b)   Number of Shares..................................................................................      7
   (c)   Exercise Price....................................................................................      7
   (d)   Exercisability....................................................................................      8
   (e)   Effect of Change in Control.......................................................................      8
   (f)   Term..............................................................................................      8
   (g)   Exercise of Options on Termination of Service.....................................................      8
   (h)   No Rights as a Stockholder........................................................................      8
   (i)   Modification, Extension and Assumption of Options.................................................      9
   (j)   Restrictions on Transfer..........................................................................      9

SECTION 9.  FORMS OF PAYMENT...............................................................................      9

   (a)   General Rule......................................................................................      9
   (b)   Surrender of Stock................................................................................      9
   (c)   Promissory Notes..................................................................................      9
   (d)   Cashless Exercise.................................................................................      9
   (e)   Other Forms of Payment............................................................................     10

SECTION 10. ADJUSTMENTS UPON CHANGES IN COMMON STOCK.......................................................     10

   (a)   General...........................................................................................     10
   (b)   Mergers and Consolidations........................................................................     10
   (c)   Reservation of Rights.............................................................................     10

SECTION 11. WITHHOLDING TAXES..............................................................................     11

   (a)   General...........................................................................................     11
   (b)   Common Stock Withholding..........................................................................     11
   (c)   Cashless Exercise/Pledge..........................................................................     11
   (d)   Other Forms of Payment............................................................................     11

SECTION 12. LEGAL REQUIREMENTS.............................................................................     11

   (a)   Restrictions on Issuance..........................................................................     11
   (b)   Financial Reports.................................................................................     11

SECTION 13. ASSIGNMENT OR TRANSFER OF AWARDS...............................................................     12

   (a)   General...........................................................................................     12
</TABLE>

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   (b)   Trusts............................................................................................     12

SECTION 14. NO EMPLOYMENT RIGHTS...........................................................................     12

SECTION 15. DURATION AND AMENDMENTS........................................................................     12

   (a)   Term of the Plan..................................................................................     12
   (b)   Right to Amend or Terminate the Plan..............................................................     12
   (c)   Effect of Amendment or Termination................................................................     13

SECTION 16. EXECUTION......................................................................................     14
</TABLE>

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                                VENGINES, INC.

                           2000 STOCK INCENTIVE PLAN

SECTION 1.     Purpose

     The purpose of the Plan is to offer selected Employees, directors and
consultants an opportunity to acquire a proprietary interest in the success of
the Company, or to increase such interest, to encourage such persons to remain
in the employ of the Company and to attract new employees with outstanding
qualifications. The Plan seeks to achieve this purpose by providing for the
direct grant or sale of Common Stock and for the grant of Options to purchase
Common Stock. Options granted under the Plan may include Nonstatutory Options as
well as Incentive Stock Options intended to qualify under Section 422 of the
Internal Revenue Code. While this Plan is intended to satisfy federal Rule 701
and Section 25102(o) of the California Corporations Code, Awards may be granted
under this Plan in reliance upon other federal and state securities law
exemptions and to the extent another exemption is relied upon, the terms of this
Plan which are required only because of Rule 701 or Section 25102(o) need not
apply to the extent provided by the Board in the award agreement. To the extent
that an Employee, director or consultant, whose legal residence is in a foreign
jurisdiction and who is not a United States taxpayer, is provided an Award under
the Plan, the laws of the foreign jurisdiction will govern the extent that an
Award can be granted, purchased or exercised under the Plan.

SECTION 2.     Definitions

          (a)  "Award" shall mean any award of an Option, Restricted Share or
other right under the Plan.

          (b)  "Board" shall mean the Board of Directors of the Company, as
constituted from time to time.

          (c)  "Change in Control" shall mean:

               (i)  The consummation of a merger or consolidation of the Company
          with or into another entity or any other corporate reorganization, if
          more than 50% of the combined voting power of the continuing or
          surviving entity's securities outstanding immediately after such
          merger, consolidation or other reorganization is owned by persons who
          were not stockholders of the Company immediately prior to such merger,
          consolidation or other reorganization; or

               (ii) The sale, transfer or other disposition of all or
          substantially all of the Company's assets other than in connection
          with a dissolution of the Company.

A transaction shall not constitute a Change in Control if: (a) its sole purpose
is to change the state of the Company's incorporation, (b) its sole purpose is
to create a holding company that will be owned in substantially the same
proportions by the persons who held the Company's securities immediately before
such transaction or (c) such transaction constitutes the Company's initial
public offering of its securities.
<PAGE>

     (d)  "Code" shall mean the Internal Revenue Code of 1986, as amended.

     (e)  "Committee" shall mean a committee consisting of one or more members
of the Board that is appointed by the Board to administer the Plan under Section
3.

     (f)  "Common-Law Employee" shall mean an individual paid from W-2 Payroll
of the Company or a Subsidiary. If, during any period, the Company (or
Subsidiary, as applicable) has not treated an individual as a Common-Law
Employee and, for that reason, has not paid such individual in a manner which
results in the issuance of a Form W-2 and withheld taxes with respect to him or
her, then that individual shall not be an eligible Common-Law Employee for that
period, even if any person, court or government agency determines,
retroactively, that that individual is or was a Common-Law Employee during all
or any portion of that period.

     (g)  "Common Stock" shall mean the Company's common stock.

     (h)  "Company" shall mean vEngines, Inc., a Delaware corporation.

     (i)  "Consultant" shall mean an individual who performs bona fide services
to the Company, a Parent or a Subsidiary other than as a Common-Law Employee, or
a member of the Board, or a member of the board of directors of a Subsidiary.

     (j)  "Disability" shall mean that the Optionee is unable to engage in any
substantial gainful activity by reason of any medically determinable physical or
mental impairment.

     (k)  "Exchange Act" shall mean the Securities and Exchange Act of 1934, as
amended.

     (l)  "Exercise" shall mean the process by which an Optionee tenders payment
for shares subject to  an Option.

     (m)  "Exercise Price" shall mean the amount for which one share of Common
Stock may be purchased upon exercise of an Option, as specified by the Board in
the applicable Stock Option Agreement.

     (n)  "Fair Market Value" shall mean the market price of shares of Common
Stock, determined by the Board as follows:

          (i)  If the shares were traded over-the-counter on the date in
     question but were not traded on the Nasdaq Stock Market or the Nasdaq
     National Market System, then the Fair Market Value shall be equal to the
     mean between the last reported representative bid and asked prices quoted
     for such date by the principal automated inter-dealer quotation system on
     which the shares are quoted or, if the shares are not quoted on any such
     system, by the "Pink Sheets" published by the National Quotation Bureau,
     Inc.;

          (ii) If the shares were traded over-the-counter on the date in
     question and were traded on the Nasdaq Stock Market or the Nasdaq National
     Market System, then the Fair Market Value shall be equal to the last-
     transaction price quoted for such date by the Nasdaq Stock Market or the
     Nasdaq National Market;

                                      -2-
<PAGE>

          (iii)  If the shares were traded on a stock exchange on the date in
     question, then the Fair Market Value shall be equal to the closing price
     reported by the applicable composite transactions report for such date; and

          (iv)   If none of the foregoing provisions is applicable, then the
     Fair Market Value shall be determined by the Board in good faith on such
     basis as it deems appropriate.

     In all cases, the determination of Fair Market Value by the Board shall be
conclusive and binding on all persons.

     (o)  "Incentive Stock Option" or "ISO" shall mean an incentive stock option
described in Code Section 422(b).

     (p)  "Key Contributor" shall mean (i) any individual who is a Common-Law
Employee of the Company, a Parent or a Subsidiary, (ii) a member of the Board,
including (without limitation) a Non-Employee Director, or an affiliate of a
member of the Board, (iii) a member of the board of directors of a Subsidiary,
or (iv) a Consultant. Service as a member of the Board, a member of the board of
directors of a Subsidiary or a Consultant shall be considered employment for all
purposes of the Plan except the second sentence of Section 4(a).

     (q)  "Non-Employee Director"

     shall mean a member of the Board who is not a Common-Law Employee of the
Company or a Subsidiary.

     (r)  "Nonstatutory Option" or "NSO" shall mean a stock option that is not
an ISO.

     (s)  "Offeree" shall mean an individual to whom the Board has offered the
right to acquire Common Stock under the Plan (other than upon exercise of an
Option).

     (t)  "Option" shall mean an ISO or NSO granted under the Plan entitling the
holder to purchase Common Stock.

     (u)  "Optionee" shall mean an individual who holds an Option.

     (v)  "Parent" shall have the meaning set forth in Section 424(e) of the
Code.

     (w)  "Participant" shall mean an individual or estate who holds an Award.

     (x)  "Plan" shall mean this 2000 Stock Incentive Plan of vEngines, Inc.

     (y)  "Preferred Stock" shall mean the Company's preferred stock.

     (z)  "Purchase Price" shall mean the consideration for which one share of
Common Stock may be acquired under the Plan (other than upon exercise of an
Option) pursuant to a grant or sale under Section 6, as specified by the Board.

                                      -3-
<PAGE>

     (aa)   "Restricted Share" shall mean a share of Common Stock sold or
granted to an eligible Key Contributor which is nontransferable and subject to
substantial risk of forfeiture until restrictions lapse.

     (bb)   "Service" shall mean service as a Key Contributor.

     (cc)   "Stock Award Agreement" shall mean the agreement between the Company
and the recipient of a Restricted Share which contains the terms, conditions and
restrictions pertaining to such Restricted Share.

     (dd)   "Stock Option Agreement" shall mean the agreement between the
Company and an Optionee that contains the terms, conditions and restrictions
pertaining to an Option .

     (ee)   "Stock Purchase Agreement" shall mean the agreement between the
Company and an Offeree who acquires Common Stock under the Plan (other than
pursuant to an Option) that contains the terms, conditions and restrictions
pertaining to the acquisition of such Common Stock.

     (ff)   "Subsidiary" shall have the meaning set forth in Section 424(f) of
the Code.

     (gg)   "10% Stockholder" shall mean an individual who owns more than 10% of
the total combined voting power of all classes of outstanding stock of the
Company, its Parent or any of its Subsidiaries. For purposes of this Subsection
(gg), in determining stock ownership, the attribution rules of Section 424(d) of
the Code shall be applied. For purposes of this Subsection (gg), "outstanding
stock" shall include all stock actually issued and outstanding immediately after
the grant, but shall not include Common Stock authorized for issuance under
outstanding Options held by the Key Contributor or by any other person.

     (hh)   "Vesting" shall mean the process by which (1) an Optionee acquires
non-forfeitable rights to purchase shares of Common Stock subject to an Option
or non-forfeitable ownership of shares of Common Stock acquired upon Exercise of
an Option or (2) an Offeree acquires non-forfeitable ownership of shares of
Common Stock subject a Stock Award Agreement.

     (ii)   "W-2 Payroll" shall mean whatever mechanism or procedure that the
Company or a Subsidiary utilizes to pay any individual which results in the
issuance of Form W-2 to the individual. "W-2 Payroll" does not include any
mechanism or procedure which results in the issuance of any form other than a
Form W-2 to an individual, including, but not limited to, any Form 1099 which
may be issued to an independent contractor, an agency employee or a consultant.
Whether a mechanism or procedure qualifies as a "W-2 Payroll" shall be
determined in the absolute discretion of the Company (or Subsidiary, as
applicable), and the Company or Subsidiary determination shall be conclusive and
binding on all persons.

SECTION 3.  Administration

     (a)    Committees of the Board . The Plan shall be administered by the
Board. However, any or all administrative functions otherwise exercisable by the
Board may be delegated to a Committee. Members of the Committee shall serve for
such period of time as the

                                      -4-
<PAGE>

Board may determine and shall be subject to removal by the Board at any time.
The Board may also at any time terminate the functions of the Committee and
reassume all powers and authority previously delegated to the Committee. Any
reference to the Board in the Plan shall be construed as a reference to the
Committee (if any) to whom the Board has assigned a particular function.

     In the event that the Company's Common Stock becomes publicly traded, the
Board may appoint a Committee which, if appointed, shall be comprised solely of
two or more Non-Employee Directors (although Committee functions may be
delegated to officers to the extent the Awards relate to persons who are not
subject to the reporting requirements of Section 16 of the Exchange Act).

     (b)    Committee Procedures . The Board shall designate one of the members
of the Committee as chairperson. The Committee may hold meetings at such times
and places as it shall determine. The acts of a majority of the Committee
members present at meetings at which a quorum exists, or acts reduced to or
approved in writing by all Committee members, shall be valid acts of the
Committee.

     (c)    Authority of the Committee . Subject to the provisions of the Plan,
the Committee shall have full authority and discretion to take any actions it
deems necessary or advisable for the administration of the Plan. The Committee
has authority in its discretion to determine eligible Key Contributors to whom,
and the time or times at which, Awards may be granted and the number of Shares
subject to each Award. Subject to the express provisions of the respective Award
agreements (which need not be identical) and to make all other determinations
necessary or advisable for Plan administration, the Committee has authority to
prescribe, amend and rescind rules and regulations relating to the Plan. All
decisions, interpretations and other actions of the Committee shall be final,
conclusive and binding on all parties who have an interest in the Plan or any
option or shares issued thereunder.

     (d)    Committee Liability . No member of the Board or the Committee will
be liable for any action or determination made in good faith by the Committee
with respect to the Plan or any Award made under the Plan.

SECTION 4.  Eligibility.

     Only Key Contributors shall be eligible for designation as Participants by
the Board.  In addition, only individuals who are employed as Common-Law
Employees by the Company or a Subsidiary shall be eligible for the grant of
ISOs.

SECTION 5.  Stock Subject to Plan.

     (a)    Basic Limitation . The stock issuable under the Plan shall be shares
of authorized but unissued or reacquired Common Stock. The maximum number of
shares of Common Stock which may be issued under the Plan shall not exceed
2,000,000 shares, subject to adjustment pursuant to Section 10.

     In any event, (i) the number of shares which are subject to Awards or other
rights outstanding at any time under the Plan shall not exceed the number of
shares which then remain

                                      -5-
<PAGE>

available for issuance under the Plan; and (ii) to the extent an award is made
in reliance upon the exemption available under Section 25102(o) of the
California Corporations Code, the number of Shares which are subject to Awards
or other rights outstanding at any time under the Plan or otherwise shall not
exceed the limitation imposed by Section 260.140.45 of Title 10 of the
California Code of Regulations. The Company, during the term of the Plan, shall
at all times reserve and keep available sufficient shares of Common Stock to
satisfy the requirements of the Plan.

     (b)       Additional Shares . If any outstanding Option or other right to
acquire Common Stock for any reason expires or is canceled, forfeited or
otherwise terminated, the Common Stock allocable to the unexercised portion of
such Option or other right shall again be available for the purposes of the
Plan. If shares of Common Stock issued under the Plan are reacquired by the
Company pursuant to any right of repurchase or right of first refusal, such
shares of Common Stock shall again be available for the purposes of the Plan,
except that the aggregate number of shares of Common Stock that may be issued
upon the exercise of ISOs shall in no event exceed the number of shares of
Common Stock reserved for issuance pursuant to paragraph (a) above plus the
number of previously optioned shares returned to the Plan pursuant to the first
sentence of this paragraph 5(b), as adjusted pursuant to Section 10.

SECTION 6.  Terms and Conditions of Grants or Sales.

     (a)    Stock Purchase Agreement . Each grant or sale of Common Stock under
the Plan (other than upon exercise of an Option) shall be evidenced by a Stock
Purchase Agreement between the Offeree and the Company. Such grant or sale shall
be subject to all applicable terms and conditions of the Plan and may be subject
to any other terms and conditions that are not inconsistent with the Plan and
that the Board deems appropriate for inclusion in a Stock Purchase Agreement.
The provisions of the various Stock Purchase Agreements entered into under the
Plan need not be identical.

     (b)    Duration of Offers . Any right to acquire Common Stock under the
Plan other than an Option shall automatically expire if not exercised by the
Offeree within thirty (30) days after the grant of such right was communicated
by the Board to the Offeree.

     (c)    Purchase Price . The Purchase Price of Common Stock offered under
the Plan shall be established by the Board and set forth in the Stock Purchase
Agreement and, to the extent required by applicable law, including the
California Corporations Code or the regulations thereunder, shall not be less
than 85% of Fair Market Value (100% for 10% Stockholders). The Purchase Price
shall be payable in a form described in Section 9 or, in the discretion of the
Board, in consideration for past services rendered to the Company or for its
benefit.

     (d)    Restrictions on Transfer of Common Stock . No Common Stock granted
or sold under the Plan may be sold or otherwise transferred or disposed of by
the Offeree during the one hundred eighty (180) day period following the
effective date of a registration statement covering securities of the Company
filed under the Securities Act of 1933 (unless such restriction is consented to
or waived by the managing underwriter). Subject to the preceding sentence, any
Common Stock granted or sold under the Plan shall be subject to such special
conditions, rights of repurchase, rights of first refusal and other transfer
restrictions as the Board may determine.

                                      -6-
<PAGE>

Such restrictions shall apply in addition to any general restrictions that may
apply to all holders of Common Stock.

SECTION 7.   Additional Terms and Conditions of Restricted Shares.

        (a)  Form and Amount of Award. Each Stock Award Agreement shall specify
the number of shares of Common Stock that are subject to the Award. Restricted
Shares may be awarded in combination with NSOs and such an Award may provide
that the Restricted Shares will be forfeited in the event that the related NSOs
are exercised.

        (b)  Vesting. Each Stock Award Agreement shall specify the conditions
upon which Restricted Shares shall become vested, in full or in installments. To
the extent required by applicable law, each Stock Award shall vest no less
rapidly than the rate of 20% per year for each of the first five years from the
date of grant. Subject to the preceding sentence, the vesting period of any
Stock Award shall be determined by the Board in its sole discretion.

        (c)  Effect of Change in Control. The Board may determine at the time of
making an Award or thereafter, that such Award shall become fully vested, in
whole or in part, in the event that a Change in Control occurs with respect to
the Company.

        (d)  Voting Rights. Holders of Restricted Shares awarded under the Plan
shall have the same voting, dividend and other rights as the Company's other
stockholders. A Stock Award Agreement, however, may require the holders to
invest any cash dividends received in additional Restricted Shares. Such
additional Restricted Shares shall be subject to the same conditions and
restrictions as the Award with respect to which the dividends were paid. Such
additional Restricted Shares shall not reduce the number of Shares available
under Section 5.

SECTION 8.   Terms and Conditions of Options

        (a)  Stock Option Agreement. Each grant of an Option under the Plan
shall be evidenced by a Stock Option Agreement between the Optionee and the
Company. Such Option shall be subject to all applicable terms and conditions of
the Plan and may be subject to any other terms and conditions that are not
inconsistent with the Plan and that the Board deems appropriate for inclusion in
a Stock Option Agreement. The provisions of the various Stock Option Agreements
entered into under the Plan need not be identical.

        (b)  Number of Shares. Each Stock Option Agreement shall specify the
number of shares of Common Stock that are subject to the Option and shall
provide for the adjustment of such number in accordance with Section 10. The
Stock Option Agreement shall also specify whether the Option is an ISO or an
NSO.

        (c)  Exercise Price. An Option's Exercise Price shall be established by
the Board and set forth in a Stock Option Agreement. The Exercise Price of an
ISO shall not be less than 100% of the Fair Market Value (110% for 10%
Stockholders) on the date of grant. To the extent required by applicable law,
including the California Corporations Code or the regulations thereunder, the
Exercise Price of a Nonstatutory Option shall not be less than 85% of the Fair
Market Value (110% for 10% Stockholders) on the date of grant. The Exercise
Price shall be payable in a form described in Section 9. Notwithstanding the
foregoing, an Option may be

                                      -7-
<PAGE>

granted with an exercise price lower than that prescribed in this paragraph 8(c)
if the Option grant is attributable to the issuance or assumption of an Option
in a transaction to which Code Section 424(a) applies.

        (d)  Exercisability. Each Stock Option Agreement shall specify the date
when all or any installment of the Option is to vest or become exercisable. To
the extent required by applicable law, including the California Corporations
Code or the regulations thereunder, an Option granted to Key Contributors who
are not officers shall vest and become exercisable no less rapidly than the rate
of 20% per year for each of the first five (5) years from the date of grant.
Subject to the preceding sentence, the vesting of any Option shall be determined
by the Board in its sole discretion. A Stock Option Agreement may permit an
Optionee to exercise an Option before it is vested, subject to the Company's
right of repurchase over any shares acquired under the unvested portion of the
Option (an "early exercise"), which right of repurchase shall lapse at the same
rate the Option would have vested had there been no early exercise.

        (e) Effect of Change in Control. The Board may determine, at the time of
granting an Option or thereafter, that such Option shall become fully
exercisable as to all shares of Common Stock subject to such Option in the event
that a Change in Control occurs with respect to the Company.

        (f)  Term. The Stock Option Agreement shall specify the term of the
Option. The term shall not exceed ten (10) years from the date of grant (five
(5) years in the case of an ISO granted to a 10% Stockholder). Subject to the
preceding sentence, the Board in its sole discretion shall determine when an
Option is to expire.

        (g) Exercise of Options on Termination of Service. Each Option shall set
forth the extent to which the Optionee shall have the right to exercise the
Option following termination of the Optionee's Service with the Company and its
Subsidiaries. Such provisions shall be determined in the sole discretion of the
Board, need not be uniform among all Options issued pursuant to the Plan, and
may reflect distinctions based on the reasons for termination of Service.
Notwithstanding the foregoing in this Section 8(g), to the extent required by
applicable law, including the California Corporations Code or the regulations
thereunder, each Stock Option Agreement shall provide that the Optionee shall
have the right to exercise the Option following termination of the Optionee's
Service, during the Option's term, for at least thirty (30) days following
termination of Service for any reason except Cause, death or Disability, and for
at least six (6) months following termination of Service due to death or
Disability.

        (h)  No Rights as a Stockholder. An Optionee, or a transferee of an
Optionee, shall have no rights as a stockholder with respect to any Common Stock
covered by an Option until such person becomes entitled to receive such Common
Stock by filing a notice of exercise, paying the Exercise Price pursuant to the
terms of such Option, and entering into a Notice of Exercise and Common Stock
Purchase Agreement.

        (i)  Modification, Extension and Assumption of Options. Within the
limitations of the Plan, the Board may modify, extend or assume outstanding
Options or may accept the cancellation of outstanding Options (whether granted
by the Company or another issuer) in return for the grant of new Options for the
same or a different number of shares of Common

                                      -8-
<PAGE>

Stock and at the same or a different Exercise Price. The foregoing
notwithstanding, no modification of an Option shall, without the consent of the
Optionee, impair the Optionee's rights or increase the Optionee's obligations
under such Option.

        (j)  Restrictions on Transfer. No shares of Common Stock issued upon
exercise of an Option may be sold or otherwise transferred or disposed of by the
Optionee during the one hundred eighty (180) day period following the effective
date of a registration statement covering securities of the Company filed under
the Securities Act of 1933 (unless such restriction is waived by the managing
underwriter of the offering with respect to which such registration statement
was filed). Subject to the preceding sentence, any Common Stock issued upon
exercise of an Option shall be subject to such rights of repurchase, rights of
first refusal and other transfer restrictions as the Board may determine. Such
restrictions shall apply in addition to any restrictions that may apply to
holders of Common Stock generally. Any right to repurchase an Optionee's Common
Stock at the original Exercise Price upon termination of the Optionee's Service
shall lapse at least as rapidly as the schedule set forth in Subsection (d)
above. Any such repurchase right may be exercised only within ninety (90) days
after the termination of the Optionee's Service for cash or for cancellation of
indebtedness incurred in purchasing the Common Stock.

SECTION 9.   Forms of Payment.

        (a)  General Rule. The entire Purchase Price or Exercise Price shall be
payable in cash or cash equivalents acceptable to the Company at the time of
exercise or purchase, except as otherwise provided in this Section 9.

        (b) Surrender of Stock. To the extent that a Stock Option Agreement or
Stock Purchase Agreement so provides, payment may be made all or in part with
shares of Common Stock already owned by the Optionee or the Optionee's
representative for any time period specified by the Board and that are
surrendered to the Company in good form for transfer. Such Common Stock shall be
valued at Fair Market Value on the date when the new Common Stock is purchased
under the Plan.

        (c) Promissory Notes. To the extent that a Stock Option Agreement or
Stock Purchase agreement so provides, payment may be made all or in part with a
full recourse promissory note executed by the Optionee of Offeree. The interest
rate and other terms and conditions of such note shall be determined by the
Board. The Board may require that the Optionee pledge his or her Common Stock to
the Company for the purpose of securing the payment of such note. In no event
shall the stock certificate(s) representing such Common Stock be released to the
Optionee or Offeree until such note is paid in full, unless otherwise provided
in the Stock Option Agreement or Stock Purchase Agreement.

        (d) Cashless Exercise. To the extent that a Stock Option Agreement so
provides and a public market for the Common Stock exists, payment may be made
all or in part by delivery (on a form acceptable to the Board) of an irrevocable
direction to a securities broker to sell Common Stock and to deliver all or part
of the sale proceeds to the Company in payment of the aggregate Exercise Price.

                                      -9-
<PAGE>

        (e)  Other Forms of Payment.  To the extent provided in the Stock Option
Agreement, payment may be made in any other form that is consistent with
applicable laws, regulations and rules.

SECTION 10.  Adjustments Upon Changes in Common Stock

        (a) General. In the event of a subdivision of the outstanding Common
Stock, a declaration of a dividend payable in Common Stock, a declaration of an
extraordinary dividend payable in a form other than Common Stock in an amount
that has a material effect on the value of Common Stock, a combination or
consolidation of the outstanding Common Stock into a lesser number of shares, a
recapitalization, a reclassification or a similar occurrence, the Board shall
make appropriate adjustments, subject to the limitations set forth in Section
10(c), in one or more of (i) the number of shares of Common Stock available for
future grants of Options or other rights to acquire Common Stock under Section
5, (ii) the number of shares of Common Stock covered by each outstanding Option
or other right to acquire Common Stock or (iii) the Exercise Price of each
outstanding Option or the Purchase Price of each other right to acquire Common
Stock.

        (b)  Mergers and Consolidations. In the event that the Company is a
party to a merger or consolidation, outstanding Options or other rights to
acquire Common Stock shall be subject to the agreement of merger or
reorganization. Such agreement, without an Optionee's consent, may provide for:

             (i)    The continuation of such outstanding Options by the Company
     (if the Company is the surviving corporation);

             (ii)   The assumption of the Plan and such outstanding Options by
     the surviving corporation or its parent;

             (iii)  The substitution by the surviving corporation or its parent
     of options with substantially the same terms for such outstanding Options;
     or

             (iv)   The cancellation of such outstanding Options that were not
     exercised or settled without payment of any consideration.

        (c)  Reservation of Rights.  Except as provided in this Section 10, an
Optionee or Offeree shall have no rights by reason of (i) any subdivision or
consolidation of shares of stock of any class, (ii) the payment of any dividend,
or (iii) any other increase or decrease in the number of shares of stock of any
class. Any issue by the Company of shares of stock of any class, or securities
convertible into shares of stock of any class, shall not affect, and no
adjustment by reason thereof shall be made with respect to, the number of shares
of Common Stock subject to an Option, or the number of shares subject to any
other right to acquire Common Stock and/or the Exercise Price or Purchase Price.
The grant of an Option or other right to acquire Common Stock pursuant to the
Plan shall not affect in any way the right or power of the Company to make
adjustments, reclassifications, reorganizations or changes of its capital or
business structure, to merge or consolidate or to dissolve, liquidate, sell or
transfer all or any part of its business or assets.

                                      -10-
<PAGE>

SECTION 11.  Withholding Taxes.

        (a)  General. To the extent required by applicable federal, state, local
or foreign law, a Participant or his or her successor shall make arrangements
satisfactory to the Committee for the satisfaction of any withholding tax
obligations that arise in connection with the Plan. The Company shall not be
required to issue any shares or make any cash payment under the Plan until such
obligations are satisfied.

        (b)  Common Stock Withholding. The Committee may permit a Participant to
satisfy all or part of his or her withholding or income tax obligations by
having the Company withhold all or a portion of any shares of Common Stock that
otherwise would be issued to him or her or by surrendering all or a portion of
any shares of Common Stock that he or she previously acquired. Notwithstanding
the previous sentence in this Section 11(b), the maximum amount that may be
subject to Common Stock withholding under this Section 11(b) shall be determined
by the Committee based upon the minimum rates of federal, state and employment
withholding taxes applicable under the circumstances. Shares of Common Stock
that are withheld or surrendered pursuant to this Section 11 shall be valued at
their Fair Market Value on the date when taxes otherwise would be withheld in
cash. Any payment of taxes by assigning shares of Common Stock to the Company
may be subject to restrictions, including any restrictions required by rules of
any federal or state regulatory body or other authority.

        (c)  Cashless Exercise/Pledge.  The Committee may provide that if
Company shares of Common Stock are publicly traded at the time of exercise,
arrangements may be made to meet the Optionee's withholding obligation by
cashless exercise or pledge.

        (d)  Other Forms of Payment. The Committee may permit such other means
of tax withholding as it deems appropriate.


SECTION 12.  Legal Requirements.

        (a)  Restrictions on Issuance.  Common Stock shall not be issued under
the Plan unless the issuance and delivery of such Common Stock complies with (or
is exempt from) all applicable requirements of law, including (without
limitation) the Securities Act of 1933, as amended, the rules and regulations
promulgated thereunder, state securities laws and regulations, and the
regulations of any stock exchange on which the Company's securities may then be
listed, and the Company has obtained the approval or favorable ruling from any
governmental agency that the Company determines is necessary or advisable.

        (b)  Financial Reports. To the extent required to comply with the
California Corporations Code or the regulations thereunder, not less often than
annually the Company shall furnish to Optionees and Offerees Company summary
financial information including a balance sheet regarding the Company's
financial condition and results of operations, unless such Optionees or Offerees
have duties with the Company that assure them access to equivalent information.
Such financial statements need not be audited.

                                      -11-
<PAGE>

SECTION 13.  Assignment or Transfer of Awards.

        (a)  General. An Award granted under the Plan shall not be anticipated,
assigned, attached, garnished, optioned, transferred or made subject to any
creditor's process, whether voluntarily, involuntarily or by operation of law,
except as approved by the Committee. Notwithstanding the foregoing, ISOs may not
be transferred. Also notwithstanding the foregoing, while the shares of Common
Stock are subject to California Corporations Code Section 25102(o), (i) Offerees
and Optionees may not transfer their rights hereunder except by will,
beneficiary designation or the laws of descent and distribution, and (ii) any
rights of repurchase in favor of the Company shall take into account the
provisions of Sections 260.140.41 or 260.140.42 of Title 10 of the California
Code of Regulations, as applicable.

        (b)  Trusts. Neither this Section 13 nor any other provision of the Plan
shall preclude a Participant from transferring or assigning Restricted Shares to
(a) the trustee of a trust that is revocable by such Participant alone, both at
the time of the transfer or assignment and at all times thereafter prior to such
Participant's death, or (b) the trustee of any other trust to the extent
approved by the Committee in writing. A transfer or assignment of Restricted
Shares from such trustee to any other person than such Participant shall be
permitted only to the extent approved in advance by the Committee in writing,
and Restricted Shares held by such trustee shall be subject to all the
conditions and restrictions set forth in the Plan and in the applicable Stock
Award Agreement, as if such trustee were a party to such Agreement.


SECTION 14.    No Employment Rights.

        No provision of the Plan, nor any Option granted or other right to
acquire Common Stock granted under the Plan, shall be construed to give any
person any right to become, to be treated as, or to remain a Key Contributor.
The Company and its Subsidiaries reserve the right to terminate any person's
Service at any time and for any reason.

SECTION 15.    Duration and Amendments.

        (a)    Term of the Plan.  The Plan, as set forth herein, shall become
effective on the date of its adoption by the Board, subject to the approval of
the Company's stockholders. In the event that the stockholders fail to approve
the Plan within twelve (12) months after its adoption by the Board, any Option
grant or other right to acquire Common Stock already made shall be null and
void, and no additional Option grant or other right to acquire Common Stock
shall be made after such date. The Plan shall terminate automatically ten (10)
years after its adoption by the Board and may be terminated on any earlier date
pursuant to Subsection (b) below.

        (b)    Right to Amend or Terminate the Plan.  The Board may amend or
terminate the Plan at any time. Except as otherwise provided in Section 10(b),
rights under any Option granted or other right to acquire Common Stock granted
before amendment of the Plan shall not be materially impaired by any amendment
or termination, except with consent of the Optionee or Offeree. An amendment of
the Plan shall be subject to the approval of the Company's stockholders only to
the extent required by applicable laws, regulations or rules.

        (c)    Effect of Amendment or Termination.  No Common Stock shall be
issued or sold under the Plan after the termination thereof, except upon
exercise of an Option granted prior to such

                                      -12-
<PAGE>

termination.  Except as otherwise provided in Section 10(b), the termination of
the Plan, or any amendment thereof, shall not affect any Common Stock previously
issued or Option previously granted under the Plan.

              [The remainder of this page is intentionally blank.]

                                      -13-
<PAGE>

SECTION 16.    Execution.

     To record the adoption of the Plan, the Company has caused its authorized
officer to execute the same.

                                                VENGINES, INC.


                                                By__________________________

                                                Title_______________________

                                      -14-