Document:

<PAGE>

                                                                  EXHIBIT 10.20

                               SERVICES AGREEMENT
                               ------------------

     This Agreement is made as of July 1, 2000, among PPL Corporation ("PPL"),
PPL Energy Funding Corporation and its direct and indirect subsidiaries in
various tiers, PPL Capital Funding, Inc., PPL Gas Utilities Corporation, PPL
Services Corporation and CEP Commerce, LLC.

     WHEREAS, PPL, under its Amended and Restated Articles of Incorporation, may
engage in any lawful act concerning any lawful business for which corporations
may be incorporated under the Pennsylvania Business Corporation Law and was
formed in 1995 for the purpose of separating PPL's regulated and unregulated
business activities; and

     WHEREAS, the following four subsidiaries within the PPL family of companies
are regulated public utilities under the Pennsylvania Public Utility Code: PPL
Electric Utilities Corporation, PFG Gas, Inc., North Penn Gas Company and PPL
Interstate Energy Company (the "Regulated Companies"); and

     WHEREAS, the provision of services between the Regulated Companies and
affiliates of the Regulated Companies, as the term affiliates is defined in the
Pennsylvania Public Utility Code, is governed by affiliated interest agreements
subject to Chapter 21 of the Pennsylvania Public Utility Code and not governed
by this Services Agreement; and

     WHEREAS, PPL and certain other subsidiaries in the PPL family of companies
are not regulated public utilities under the Pennsylvania Public Utility Code,
and a list of PPL and such unregulated subsidiaries, which list may be updated
from time to time, is attached as Appendix "A" to this Service Agreement
(collectively, the "Unregulated Companies"); and

     WHEREAS, the Unregulated Companies each possess knowledge and skill in
various aspects of business operations; and

     WHEREAS, the provisions of certain services between individual Unregulated
Companies will enable the parties to obtain these services effectively and
efficiently; and

     WHEREAS, the Unregulated Companies desire to procure services from each
other on a non-exclusive basis, and the Unregulated Companies are willing to
provide these services to each other pursuant and subject to the terms and
conditions of this Agreement; and

     NOW, THEREFORE, in consideration of the agreements set forth herein and
intending to be legally bound hereby, the Unregulated Companies agree as
follows:

     A. SERVICES
        --------

     1. The Unregulated Companies agree to provide, on an as-available basis,
such services as may from time to time be requested by one another. These
services may include any services necessary and appropriate to the safe,
efficient and cost-effective operation of Unregulated Companies' businesses,
including but not limited to, executive management, administration, accounting,
finance, legal, communications, purchasing, billing, information systems,
corporate secretarial, human resources, insurance and other similar types of
services.

     2. The Unregulated Companies may request services of this nature from time

<PAGE>

to time on an as-needed basis. The Unregulated Companies are under no obligation
to procure a set amount of services pursuant to this Agreement. In addition, the
Unregulated Companies are not obligated to procure these types of services
solely from the other parties to this Agreement. If they so desire, the
Unregulated Companies may procure these or similar services from third-party
providers.

     3. With respect to services provided to PPL Susquehanna, LLC; in order to
help assure the safe operation of the Susquehanna Steam Electric Station and
compliance with applicable regulatory requirements, PPL Susquehanna, LLC shall
have final decision-making authority over any such services involved in Nuclear
Regulatory Commission licensed activities.

     B. COSTS AND ACCOUNTING
        --------------------

     1. Services provided pursuant to Section A of this Service Agreement are to
be charged to the recipient at their full cost to the provider. Full cost
includes the following:

     a. Direct Costs

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

     If costs can be determined with reasonable certainty, these costs will be
assumed to be the direct and full costs of providing the services at issue.

     b. Indirect Costs

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

     Costs shall include applicable indirect costs such as overhead, to the
extent that such costs can be calculated with reasonable certainty and are
readily ascertainable. For example, costs associated with an individual's time
may include a component for additional, related costs, as appropriate (e.g.,
applicable employee benefit costs).

     c. Allocation

        ----------

     If charges cannot be directly assigned to one party, they will be allocated
between the parties based on a reasonable approximation of the costs
attributable to each party.

     C. BILLING AND PAYMENT
        -------------------

     1. The Unregulated Companies providing services under Section A of this
Agreement shall submit invoices to or directly charge, on a monthly or more
frequent basis, the Unregulated Companies receiving such services. Such invoices
or direct charges shall reference the service provided and the associated costs,
which shall be determined in accordance with Section B of this Agreement.

     2. Invoices or direct charges shall be due and payable within sixty (60)
days after receipt.

     D. GENERAL
        -------

     1. Subsidiary Participation
        ------------------------

     Unregulated Companies as used in this Agreement shall include all direct or
indirect subsidiary companies of PPL other than PPL Electric Utilities
Corporation, PFG Gas, Inc., North Penn Gas Company and PPL Interstate Energy

<PAGE>

Company and any other public utilities regulated under the Pennsylvania Public
Utility Code, whether or not such Unregulated Companies are identified in
Appendix "A" as amended from time to time.

     2. Term
        ----

     The term of this Agreement shall commence on the date first set forth
above.

Thereafter, this Agreement shall continue in full force and effect until
terminated by agreement of the parties upon 90 days' written notice to the other
parties its election to do so.

     3. Governing Law
        -------------

     This Agreement shall be governed by and construed in accordance with the
laws of the Commonwealth of Pennsylvania.

     4. Counterparts
        ------------

     This Agreement may be executed in more than one counterpart, each of which
shall be an original and all of which shall together constitute a single
instrument.

     IN WITNESS WHEREOF, the parties have executed this Agreement as set forth
below.

                                 PPL CORPORATION

                              By: /s/ James E. Abel
                                   -----------------
                               Name: James E. Abel

                               Title: Vice President - Finance and Treasury
                                      -------------------------------------

                               PPL ENERGY FUNDING CORPORATION

                              By: /s/ James E. Abel
                                  -----------------
                               Name: James E. Abel

                                Title: Treasurer
                                       ---------

<PAGE>

                               PPL CAPITAL FUNDING, INC.

                               By:  /s/ James E. Abel
                                    -----------------
                               Name: James E. Abel

                                Title: Treasurer
                                       ---------

                               PPL GAS UTILITIES CORPORATION

                              By: /s/ James E. Abel
                                   -----------------
                               Name: James E. Abel

                                Title: Treasurer
                                      ---------

                              PPL SERVICES CORPORATION

                              By: /s/ James E. Abel
                                   -----------------
                               Name: James E. Abel

                                Title: Vice President and Treasurer
                                       ----------------------------

                              CEP COMMERCE, LLC

                              By: /s/ James E. Abel
                                   -----------------
                               Name: James E. Abel

                                Title: Vice President
                                       --------------

<PAGE>

                                  APPENDIX "A"

                        LIST OF UNREGULATED SUBSIDIARIES
                   IN THE PPL CORPORATION FAMILY OF COMPANIES
                 (NOT INCLUDING SUBSIDIARIES OF PPL GLOBAL, LLC)

<TABLE>
<CAPTION>
<S>     <C>

PPL Corporation

o   PPL Energy Funding Corporation

    -    PPL EnergyPlus, LLC
         -    PPL Synfuel Investments, LLC
              -    PPL Somerset, LLC
              -    Clymer Fuels, LLC
         -    PPL Spectrum, Inc.
         -    PPL Energy Services Holdings, LLC
              -    H.T. Lyons, Inc.
              -    McClure Company
              -    McCarl's, Inc.
              -    Burns Mechanical, Inc.
              -    Western Mass. Holdings, Inc.
    -    PPL Generation, LLC
         -    PPL Maine, LLC
              -    PPL Great Works, LLC
              -    Penobscot Hydro Co., Inc.
         -    PPL Susquehanna, LLC
         -    PPL Martins Creek, LLC
         -    PPL Brunner Island, LLC
         -    PPL Montour, LLC
              - PPL Rights, Inc.
                   (subsidiary of PPL Martins Creek, PPL Brunner Island
                   and PPL Montour)
         -    PPL Holtwood, LLC
         -    PPL Montana Holdings, LLC
              -    Colstrip Comm Serv, LLC
              -    PPL Montana, LLC
                   -    PPL Colstrip I, LLC
                   -    PPL Colstrip II, LLC
              -    Pennsylvania Mines Corporation
              -    Realty Company of Pennsylvania
                   -    BDW Corp.
                   -    Lady Jane Collieries, Inc.
                   -    Greene Manor Coal Company

    - PPL Global, LLC (Unregulated Subsidiaries omitted)
    - CEP Delaware, Inc.
    - CEP Reserves, Inc.
      -    CEP Securities Co., LLC

o   PPL Capital Funding, Inc.

o   PPL Gas Utilities Corporation

o   PPL Services Corporation

o   CEP Commerce, LLC
    (subsidiary of PPL Electric Utilities Corporation)

</TABLE><PAGE>

                                                                     EXHIBIT 4.4

                             STREAM MACHINE COMPANY

                                 1996 STOCK PLAN

         1. Purposes of the Plan. The purposes of this Stock Plan are to attract
and retain the best available personnel for positions of substantial
responsibility, to provide additional incentive to Employees and Consultants of
the Company and its Subsidiaries and to promote the success of the Company's
business. Options granted under the Plan may be incentive stock options (as
defined under Section 422 of the Code) or non-statutory stock options, as
determined by the Administrator at the time of grant of an option and subject to
the applicable provisions of Section 422 of the Code, as amended, and the
regulations promulgated thereunder. Stock purchase rights may also be granted
under the Plan.

         2. Definitions. As used herein, the following definitions shall apply:

                  (a) "Administrator" means the Board or any of its Committees
appointed pursuant to Section 4 of the Plan.

                  (b) "Board" means the Board of Directors of the Company.

                  (c) "Code" means the Internal Revenue Code of 1986, as
amended.

                  (d) "Committee" means a Committee appointed by the Board of
Directors in accordance with Section 4 of the Plan.

                  (e) "Common Stock" means the Common Stock of the Company.

                  (f) "Company" means Stream Machine Company, a California
corporation.

                  (g) "Consultant" means any person who is engaged by the
Company or any Parent or Subsidiary to render consulting or advisory services
and is compensated for such services, and any director of the Company whether
compensated for such services or not, provided that if and in the event the
Company registers any class of any equity security pursuant to the Exchange Act,
the term Consultant shall thereafter not include directors who are not
compensated for their services or are paid only a director's fee by the Company.

                  (h) "Continuous Status as an Employee or Consultant" means
that the employment or consulting relationship with the Company or any Parent or
Subsidiary is not interrupted or terminated. Continuous Status as an Employee or
Consultant shall not be considered interrupted in the case of: (i) any leave of
absence approved by the Company, including sick leave, military leave, or any
other personal leave; provided, however, that for purposes of Incentive Stock
Options, no such leave may exceed ninety (90) days, unless reemployment upon the
expiration of such leave is guaranteed by contract (including certain Company
policies) or statute; provided, further, that on the

<PAGE>
ninety-first (91st) day of any such leave (where reemployment is not guaranteed
by contract or statute) the Optionee's Incentive Stock Option shall cease to be
treated as an Incentive Stock Option and will be treated for tax purposes as a
Nonstatutory Stock Option; or (ii) transfers between locations of the Company or
between the Company, its Parent, its Subsidiaries or its successor.

                  (i) "Director" means a member of the Board of Directors of the
Company.

                  (j) "Employee" means any person, including officers and
directors, employed by the Company or any Parent or Subsidiary of the Company.
The payment of a director's fee by the Company shall not be sufficient to
constitute "employment" by the Company.

                  (k) "Exchange Act" means the Securities Exchange Act of 1934,
as amended.

                  (l) "Fair Market Value" means, as of any date, the value of
Common Stock determined as follows:

                           (i) If the Common Stock is listed on any established
stock exchange or a national market system, including without limitation the
National Market System of the National Association of Securities Dealers, Inc.
Automated Quotation ("NASDAQ") System, its Fair Market Value shall be the
closing sales price for such stock (or the closing bid, if no sales were
reported, as quoted on such exchange or system for the last market trading day
prior to the time of determination) as reported in The Wall Street Journal or
such other source as the Administrator deems reliable;

                           (ii) If the Common Stock is quoted on the NASDAQ
System (but not on the National Market System thereof) or regularly quoted by a
recognized securities dealer but selling prices are not reported, its Fair
Market Value shall be the mean between the high bid and low asked prices for the
Common Stock or;

                           (iii) In the absence of an established market for the
Common Stock, the Fair Market Value thereof shall be determined in good faith by
the Administrator.

                  (m) "Incentive Stock Option" means an Option intended to
qualify as an incentive stock option within the meaning of Section 422 of the
Code.

                  (n) "Nonstatutory Stock Option" means an Option not intended
to qualify as an Incentive Stock Option.

                  (o) "Officer" means a person who is an officer of the Company
within the meaning of Section 16 of the Exchange Act and the rules and
regulations promulgated thereunder.

                  (p) "Option" means a stock option granted pursuant to the
Plan.

                  (q) "Optioned Stock" means the Common Stock subject to an
Option or a Stock Purchase Right.

                                      -2-
<PAGE>

                  (r) "Optionee" means an Employee or Consultant who receives an
Option or Stock Purchase Right.

                  (s) "Parent" means a "parent corporation", whether now or
hereafter existing, as defined in Section 424(e) of the Code.

                  (t) "Plan" means this 1996 Stock Plan.

                  (u) "Restricted Stock" means shares of Common Stock acquired
pursuant to a grant of a Stock Purchase Right under Section 11 below.

                  (v) "Section 16(b)" means Section 16(b) of the Securities
Exchange Act of 1934, as amended.

                  (w) "Share" means a share of the Common Stock, as adjusted in
accordance with Section 12 below.

                  (x) "Stock Purchase Right" means the right to purchase Common
Stock pursuant to Section 11 below.

                  (y) "Subsidiary" means a "subsidiary corporation", whether now
or hereafter existing, as defined in Section 424(f) of the Code.

         3. Stock Subject to the Plan. Subject to the provisions of Section 12
of the Plan, the maximum aggregate number of shares which may be optioned and
sold under the Plan is 5,625,000 shares of Common Stock. The shares may be
authorized, but unissued, or reacquired Common Stock.

                  If an Option or Stock Purchase Right should expire or become
unexercisable for any reason without having been exercised in full, the
unpurchased Shares which were subject thereto shall, unless the Plan shall have
been terminated, become available for future grant under the Plan unless the
Plan has terminated). However, Shares that have actually been issued under the
Plan, upon exercise of either an Option or Stock Purchase Right, shall not be
returned to the Plan and shall not become available for future distribution
under the Plan, except that if Shares of Restricted Stock are repurchased by the
Company at their original purchase price, and the original purchase of such
Shares did not receive any benefits of ownership of such Shares, such Shares
shall become available for future grant under the Plan. For purposes of the
preceding sentence, voting rights shall not be considered a benefit of Share
ownership.

         4. Administration of the Plan.

                                      -3-
<PAGE>

                  (a) Initial Plan Procedure. Prior to the date, if any, upon
which the Company becomes subject to the Exchange Act, the Plan shall be
administered by the Board or a committee appointed by the Board.

                  (b) Plan Procedure After the Date, if any, upon Which the
Company becomes Subject to the Exchange Act.

                           (i) Multiple Administrative Bodies. If permitted by
Rule 16b-3, the Plan may be administered by different bodies with respect to
directors, non-director officers and Employees who are neither directors nor
officers.

                           (ii) Administration With Respect to Directors and
Officers. With respect to grants of Options or Stock Purchase Rights to
Employees who are also officers or directors of the Company, the Plan shall be
administered by (A) the Board if the Board may administer the Plan in compliance
with Rule 16b-3 promulgated under the Exchange Act or any successor thereto
("Rule 16b-3") with respect to a plan intended to qualify thereunder as a
discretionary plan, or (B) a committee designated by the Board to administer the
Plan, which committee shall be constituted in such a manner as to permit the
Plan to comply with Rule 16b-3 with respect to a plan intended to qualify
thereunder as a discretionary plan. Once appointed, such Committee shall
continue to serve in its designated capacity until otherwise directed by the
Board. From time to time the Board may increase the size of the Committee and
appoint additional members thereof, remove members (with or without cause) and
appoint new members in substitution therefor, fill vacancies, however caused,
and remove all members of the Committee and thereafter directly administer the
Plan, all to the extent permitted by Rule 16b-3 with respect to a plan intended
to qualify thereunder as a discretionary plan.

                           (iii) Administration With Respect to Consultants and
Other Employees. With respect to grants of Options or Stock Purchase Rights to
Employees or Consultants who are neither directors nor officers of the Company,
the Plan shall be administered by (A) the Board or (B) a committee designated by
the Board, which committee shall be constituted in such a manner as to satisfy
the legal requirements relating to the administration of incentive stock option
plans, if any, of California corporate and securities laws, of the Code, and of
any applicable stock exchange (the "Applicable Laws"). Once appointed, such
Committee shall continue to serve in its designated capacity until otherwise
directed by the Board. From time to time the Board may increase the size of the
Committee and appoint additional members thereof, remove members (with or
without cause) and appoint new members in substitution therefor, fill vacancies,
however caused, and remove all members of the Committee and thereafter directly
administer the Plan, all to the extent permitted by the Applicable Laws.

                  (c) Powers of the Administrator. Subject to the provisions of
the Plan and, in the case of a Committee, the specific duties delegated by the
Board to such Committee, and subject to the approval of any relevant
authorities, including the approval, if required, of any stock exchange upon
which the Common Stock is listed, the Administrator shall have the authority, in
its discretion:

                                      -4-
<PAGE>

                           (i) to determine the Fair Market Value of the Common
Stock, in accordance with Section 2(k) of the Plan;

                           (ii) to select the Consultants and Employees to whom
Options and Stock Purchase Rights may from time to time be granted hereunder;

                           (iii) to determine whether and to what extent Options
and Stock Purchase Rights or any combination thereof are granted hereunder;

                           (iv) to determine the number of shares of Common
Stock to be covered by each such award granted hereunder;

                           (v) to approve forms of agreement for use under the
Plan;

                           (vi) to determine the terms and conditions, not
inconsistent with the terms of the Plan, of any award granted hereunder;

                           (vii) to determine whether and under what
circumstances an Option may be settled in cash under subsection 9(f) instead of
Common Stock;

                           (viii) to reduce the exercise price of any Option to
the then current Fair Market Value if the Fair Market Value of the Common Stock
covered by such Option shall have declined since the date the Option was
granted;

                           (ix) to construe and interpret the terms of the Plan
and awards granted pursuant to the Plan.

                  (d) Effect of Administrator's Decision. All decisions,
determinations and interpretations of the Administrator shall be final and
binding on all Optionees and any other holders of any Options or Stock Purchase
Rights.

         5. Eligibility.

                  (a) Nonstatutory Stock Options and Stock Purchase Rights may
be granted to Employees and Consultants. Incentive Stock Options may be granted
only to Employees. An Employee or Consultant who has been granted an Option or
Stock Purchase Right may, if otherwise eligible, be granted additional Options
or Stock Purchase Rights.

                  (b) Each Option shall be designated in the written option
agreement as either an Incentive Stock Option or a Nonstatutory Stock Option.
However, notwithstanding such designations, to the extent that the aggregate
Fair Market Value of the Shares with respect to which Options designated as
Incentive Stock Options are exercisable for the first time by any Optionee

                                      -5-
<PAGE>

during any calendar year (under all plans of the Company or any Parent or
Subsidiary) exceeds $100,000, such excess Options shall be treated as
Nonstatutory Stock Options.

                  (c) Neither the Plan nor any Option or Stock Purchase Right
shall confer upon any Optionee any right with respect to continuation of his or
her employment or consulting relationship with the Company, nor shall it
interfere in any way with his or her right or the Company's right to terminate
his or her employment or consulting relationship at any time, with or without
cause.

                  (d) Upon the Company or a successor corporation issuing any
class of common equity securities required to be registered under Section 12 of
the Exchange Act or upon the Plan being assumed by a corporation having a class
of common equity securities required to be registered under Section 12 of the
Exchange Act, the following limitations shall apply to grants of Options and
Stock Purchase Rights to Employees:

                           (i) If an Option or Stock Purchase Right is cancelled
(other than in connection with a transaction described in Section 12, the
cancelled Option or Stock Purchase Right will be counted against the limit set
forth Section 3. For this purpose, if the exercise price of an Option or Stock
Purchase Right is reduced, the transaction will be treated as a cancellation of
the Option or Stock Purchase Right and the grant of a new Option or Stock
Purchase Right.

         6. Term of Plan. The Plan shall become effective upon the earlier to
occur of its adoption by the Board of Directors or its approval by the
shareholders of the Company, as described in Section 18 of the Plan. It shall
continue in effect for a term of ten (10) years unless sooner terminated under
Section 14 of the Plan.

         7. Term of Option. The term of each Option shall be the term stated in
the Option Agreement; provided, however, that the term shall be no more than ten
(10) years from the date of grant thereof. However, in the case of an Incentive
Stock Option granted to an Optionee who, at the time the Option is granted, owns
stock representing more than ten percent (10%) of the voting power of all
classes of stock of the Company or any Parent or Subsidiary, the term of the
Option shall be five (5) years from the date of grant thereof or such shorter
term as may be provided in the Option Agreement.

         8. Option Exercise Price and Consideration.

                  (a) The per share exercise price for the Shares to be issued
pursuant to exercise of an Option shall be such price as is determined by the
Board, but shall be subject to the following:

                           (i) In the case of an Incentive Stock Option

                                    (A) granted to an Employee who, at the time
of the grant of such Incentive Stock Option, owns stock representing more than
ten percent (10%) of the voting power of all classes of stock of the Company or
any Parent or Subsidiary, the per Share exercise price shall be no less than
110% of the Fair Market Value per Share on the date of grant.

                                      -6-
<PAGE>

                                    (B) granted to any Employee other than an
Employee described in the preceding paragraph, the per Share exercise price
shall be no less than 100% of the Fair Market Value per Share on the date of
grant.

                           (ii) In the case of a Nonstatutory Stock Option

                                    (A) granted to a person who, at the time of
the grant of such Option, owns stock representing more than ten percent (10%) of
the voting power of all classes of stock of the Company or any Parent or
Subsidiary, the per Share exercise price shall be no less than 110% of the Fair
Market Value per Share on the date of the grant.

                                    (B) granted to any person, the per Share
exercise price shall be no less than 85% of the Fair Market Value per Share on
the date of grant.

                  (b) The consideration to be paid for the Shares to be issued
upon exercise of an Option, including the method of payment, shall be determined
by the Administrator (and, in the case of an Incentive Stock Option, shall be
determined at the time of grant) and may consist entirely of (1) cash, (2)
check, (3) promissory note, (4) other Shares which (x) in the case of Shares
acquired upon exercise of an Option, have been owned by the Optionee for more
than six months on the date of surrender, and (y) have a Fair Market Value on
the date of surrender equal to the aggregate exercise price of the Shares as to
which said Option shall be exercised, (5) delivery of a properly executed
exercise notice together with such other documentation as the Administrator and
the broker, if applicable, shall require to effect an exercise of the Option and
delivery to the Company of the sale or loan proceeds required to pay the
exercise price, or (6) any combination of the foregoing methods of payment. In
making its determination as to the type of consideration to accept, the Board
shall consider if acceptance of such consideration may be reasonably expected to
benefit the Company.

         9. Exercise of Option.

                  (a) Procedure for Exercise; Rights as a Shareholder. Any
Option granted hereunder shall be exercisable at such times and under such
conditions as determined by the Board, including performance criteria with
respect to the Company and/or the Optionee, and as shall be permissible under
the terms of the Plan.

                           An Option may not be exercised for a fraction of a
Share.

                           An Option shall be deemed to be exercised when
written notice of such exercise has been given to the Company in accordance with
the terms of the Option by the person entitled to exercise the Option and full
payment for the Shares with respect to which the Option is exercised has been
received by the Company. Full payment may, as authorized by the Board, consist
of any consideration and method of payment allowable under Section 8(b) of the
Plan. Until the issuance (as evidenced by the appropriate entry on the books of
the Company or of a duly authorized

                                      -7-
<PAGE>

transfer agent of the Company) of the stock certificate evidencing such Shares,
no right to vote or receive dividends or any other rights as a shareholder shall
exist with respect to the Optioned Stock, notwithstanding the exercise of the
Option. The Company shall issue (or cause to be issued) such stock certificate
promptly upon exercise of the Option. No adjustment will be made for a dividend
or other right for which the record date is prior to the date the stock
certificate is issued, except as provided in Section 12 of the Plan.

                           Exercise of an Option in any manner shall result in a
decrease in the number of Shares which thereafter may be available, both for
purposes of the Plan and for sale under the Option, by the number of Shares as
to which the Option is exercised.

                  (b) Termination of Employment or Consulting Relationship. In
the event of termination of an Optionee's Continuous Status as an Employee or
Consultant with the Company (but not in the event of an Optionee's change of
status from Employee to Consultant (in which case an Employee's Incentive Stock
Option shall automatically convert to a Nonstatutory Stock Option on the
ninety-first (91st) day following such change of status) or from Consultant to
Employee), such Optionee may, but only within such period of time as is
determined by the Administrator, of at least thirty (30) days, with such
determination in the case of an Incentive Stock Option not exceeding three (3)
months after the date of such termination (but in no event later than the
expiration date of the term of such Option as set forth in the Option
Agreement), exercise his or her Option to the extent that Optionee was entitled
to exercise it at the date of such termination. To the extent that Optionee was
not entitled to exercise the Option at the date of such termination, or if
Optionee does not exercise such Option to the extent so entitled within the time
specified herein, the Option shall terminate.

                  (c) Disability of Optionee. In the event of termination of an
Optionee's consulting relationship or Continuous Status as an Employee as a
result of his or her disability, Optionee may, but only within six (6) months
from the date of such termination (and in no event later than the expiration
date of the term of such Option as set forth in the Option Agreement), exercise
the Option to the extent otherwise entitled to exercise it at the date of such
termination; provided, however, that if such disability is not a "disability" as
such term is defined in Section 22(e)(3) of the Code, in the case of an
Incentive Stock Option such Incentive Stock Option shall automatically convert
to a Nonstatutory Stock Option on the day three months and one day following
such termination. To the extent that Optionee was not entitled to exercise the
Option at the date of termination, or if Optionee does not exercise such Option
to the extent so entitled within the time specified herein, the Option shall
terminate, and the Shares covered by such Option shall revert to the Plan.

                  (d) Death of Optionee. In the event of the death of an
Optionee, the Option may be exercised at any time within twelve (12) months
following the date of death (but in no event later than the expiration of the
term of such Option as set forth in the Notice of Grant), by the Optionee's
estate or by a person who acquired the right to exercise the Option by bequest
or inheritance, but only to the extent that the Optionee was entitled to
exercise the Option at the date of death. If, at the time of death, the Optionee
was not entitled to exercise his or her entire Option, the Shares covered by the
unexercisable portion of the Option shall immediately revert to the Plan. If,
after death, the

                                      -8-
<PAGE>

Optionee's estate or a person who acquired the right to exercise the Option by
bequest or inheritance does not exercise the Option within the time specified
herein, the Option shall terminate, and the Shares covered by such Option shall
revert to the Plan.

                  (e) Rule 16b-3. Options granted to persons subject to Section
16(b) of the Exchange Act must comply with Rule 16b-3 and shall contain such
additional conditions or restrictions as may be required thereunder to qualify
for the maximum exemption from Section 16 of the Exchange Act with respect to
Plan transactions.

                  (f) Buyout Provisions. The Administrator may at any time offer
to buy out for a payment in cash or Shares, an Option previously granted, based
on such terms and conditions as the Administrator shall establish and
communicate to the Optionee at the time that such offer is made.

         10. Non-Transferability of Options and Stock Purchase Rights. Options
and Stock Purchase Rights may not be sold, pledged, assigned, hypothecated,
transferred, or disposed of in any manner other than by will or by the laws of
descent or distribution and may be exercised, during the lifetime of the
Optionee, only by the Optionee.

         11. Stock Purchase Rights.

                  (a) Rights to Purchase. Stock Purchase Rights may be issued
either alone, in addition to, or in tandem with other awards granted under the
Plan and/or cash awards made outside of the Plan. After the Administrator
determines that it will offer Stock Purchase Rights under the Plan, it shall
advise the offeree in writing of the terms, conditions and restrictions related
to the offer, including the number of Shares that such person shall be entitled
to purchase, the price to be paid, and the time within which such person must
accept such offer, which shall in no event exceed thirty (30) days from the date
upon which the Administrator made the determination to grant the Stock Purchase
Right. The offer shall be accepted by execution of a Restricted Stock purchase
agreement in the form determined by the Administrator. Shares purchased pursuant
to the grant of a Stock Purchase Right shall be referred to herein as
"Restricted Stock."

                  (b) Repurchase Option. Unless the Administrator determines
otherwise, the Restricted Stock purchase agreement shall grant the Company a
repurchase option exercisable upon the voluntary or involuntary termination of
the purchaser's employment with the Company for any reason (including death or
Disability). The purchase price for Shares repurchased pursuant to the
Restricted Stock purchase agreement shall be the original price paid by the
purchaser and may be paid by cancellation of any indebtedness of the purchaser
to the Company. The repurchase option shall lapse at such rate as the
Administrator may determine, but at a minimum rate of 20% per year.

                  (c) Other Provisions. The Restricted Stock purchase agreement
shall contain such other terms, provisions and conditions not inconsistent with
the Plan as may be determined by the Administrator in its sole discretion. In
addition, the provisions of Restricted Stock purchase agreements need not be the
same with respect to each purchaser.

                                      -9-
<PAGE>

                  (d) Rights as a Shareholder. Once the Stock Purchase Right is
exercised, the purchaser shall have the rights equivalent to those of a
shareholder, and shall be a shareholder when his or her purchase is entered upon
the records of the duly authorized transfer agent of the Company. No adjustment
will be made for a dividend or other right for which the record date is prior to
the date the Stock Purchase Right is exercised, except as provided in Section 12
of the Plan.

         12. Adjustments Upon Changes in Capitalization or Merger.

                  (a) Changes in Capitalization. Subject to any required action
by the shareholders of the Company, the number of shares of Common Stock covered
by each outstanding Option or Stock Purchase Right, and the number of shares of
Common Stock which have been authorized for issuance under the Plan but as to
which no Options or Stock Purchase Rights have yet been granted or which have
been returned to the Plan upon cancellation or expiration of an Option or Stock
Purchase Right, as well as the price per share of Common Stock covered by each
such outstanding Option or Stock Purchase Right, shall be proportionately
adjusted for any increase or decrease in the number of issued shares of Common
Stock resulting from a stock split, reverse stock split, stock dividend,
combination or reclassification of the Common Stock, or any other increase or
decrease in the number of issued shares of Common Stock effected without receipt
of consideration by the Company; provided, however, that conversion of any
convertible securities of the Company shall not be deemed to have been "effected
without receipt of consideration." Such adjustment shall be made by the Board,
whose determination in that respect shall be final, binding and conclusive.
Except as expressly provided herein, no issuance by the Company of shares of
stock of any class, or securities convertible into shares of stock of any class,
shall affect, and no adjustment by reason thereof shall be made with respect to,
the number or price of shares of Common Stock subject to an Option or Stock
Purchase Right.

                 (b) Dissolution or Liquidation. In the event of the proposed
dissolution or liquidation of the Company, the Board shall notify the Optionee
at least fifteen (15) days prior to such proposed action. To the extent it has
not been previously exercised, the Option or Stock Purchase Right will terminate
immediately prior to the consummation of such proposed action.

                  (c) Merger. In the event of a merger of the Company with or
into another corporation, the Option or Stock Purchase Right shall be assumed or
an equivalent option or right shall be substituted by such successor corporation
or a parent or subsidiary of such successor corporation. If, in such event, the
Option or Stock Purchase Right is not assumed or substituted, the Option or
Stock Purchase Right shall terminate as of the date of the closing of the
merger. For the purposes of this paragraph, the Option or Stock Purchase Right
shall be considered assumed if, following the merger, the option or right
confers the right to purchase, for each Share of Optioned Stock subject to the
Option or Stock Purchase Right immediately prior to the merger, the
consideration (whether stock, cash, or other securities or property) received in
the merger by holders of Common Stock for each Share held on the effective date
of the transaction (and if holders were offered a choice of consideration, the
type of consideration chosen by the holders of a majority of the outstanding
Shares); provided, however, that if such consideration received in the merger
was not solely common stock of the successor corporation or its Parent, the
Administrator may, with the

                                      -10-
<PAGE>

consent of the successor corporation, provide for the consideration to be
received upon the exercise of the Option or Stock Purchase Right, for each Share
of Optioned Stock subject to the Option or Stock Purchase Right, to be solely
common stock of the successor corporation or its Parent equal in fair market
value to the per share consideration received by holders of Common Stock in the
merger.

         13. Time of Granting Options and Stock Purchase Rights. The date of
grant of an Option or Stock Purchase Right shall, for all purposes, be the date
on which the Administrator makes the determination granting such Option or Stock
Purchase Right, or such other date as is determined by the Board. Notice of the
determination shall be given to each Employee or Consultant to whom an Option or
Stock Purchase Right is so granted within a reasonable time after the date of
such grant.

         14. Amendment and Termination of the Plan.

                  (a) Amendment and Termination. The Board may at any time
amend, alter, suspend or discontinue the Plan, but no amendment, alteration,
suspension or discontinuation shall be made which would impair the rights of any
Optionee under any grant theretofore made, without his or her consent. In
addition, to the extent necessary and desirable to comply with Rule 16b-3 under
the Exchange Act or with Section 422 of the Code (or any other applicable law or
regulation, including the requirements of the NASD or an established stock
exchange), the Company shall obtain shareholder approval of any Plan amendment
in such a manner and to such a degree as required.

                  (b) Effect of Amendment or Termination. Any such amendment or
termination of the Plan shall not affect Options or Stock Purchase Rights
already granted, and such Options and Stock Purchase Rights shall remain in full
force and effect as if this Plan had not been amended or terminated, unless
mutually agreed otherwise between the Optionee and the Board, which agreement
must be in writing and signed by the Optionee and the Company.

         15. Conditions Upon Issuance of Shares. Shares shall not be issued
pursuant to the exercise of an Option or Stock Purchase Right unless the
exercise of such Option or Stock Purchase Right and the issuance and delivery of
such Shares pursuant thereto shall comply with all relevant provisions of law,
including, without limitation, the Securities Act of 1933, as amended, the
Exchange Act, the rules and regulations promulgated thereunder, and the
requirements of any stock exchange upon which the Shares may then be listed, and
shall be further subject to the approval of counsel for the Company with respect
to such compliance.

                  As a condition to the exercise of an Option or Stock Purchase
Right, the Company may require the person exercising such Option or Stock
Purchase Right to represent and warrant at the time of any such exercise that
the Shares are being purchased only for investment and without any present
intention to sell or distribute such Shares if, in the opinion of counsel for
the Company, such a representation is required by any of the aforementioned
relevant provisions of law.

                                      -11-
<PAGE>

         16. Reservation of Shares. The Company, during the term of this Plan,
will at all times reserve and keep available such number of Shares as shall be
sufficient to satisfy the requirements of the Plan.

                  The inability of the Company to obtain authority from any
regulatory body having jurisdiction, which authority is deemed by the Company's
counsel to be necessary to the lawful issuance and sale of any Shares hereunder,
shall relieve the Company of any liability in respect of the failure to issue or
sell such Shares as to which such requisite authority shall not have been
obtained.

         17. Agreements. Options and Stock Purchase Rights shall be evidenced by
written agreements in such form as the Board shall approve from time to time.

         18. Shareholder Approval. Continuance of the Plan shall be subject to
approval by the shareholders of the Company within twelve (12) months before or
after the date the Plan is adopted. Such shareholder approval shall be obtained
in the degree and manner required under applicable state and federal law and the
rules of any stock exchange upon which the Common Stock is listed.

         19. Information to Optionees and Purchasers. The Company shall provide
to each Optionee and to each individual who acquired Shares pursuant to the
Plan, not less frequently than annually during the period such Optionee or
purchaser has one or more Options or Stock Purchase Rights outstanding, and, in
the case of an individual who acquired Shares pursuant to the Plan, during the
period such individual owns such Shares, copies of annual financial statements.
The Company shall not be required to provide such statements to key employees
whose duties in connection with the Company assure their access to equivalent
information.

                                  -12-
<PAGE>
                             STREAM MACHINE COMPANY

                                 1996 STOCK PLAN

                     STOCK OPTION AGREEMENT - EARLY EXERCISE

        Unless otherwise defined herein, the terms defined in the Plan shall
have the same defined meanings in this Stock Option Agreement.

1.  NOTICE OF STOCK OPTION GRANT

((NAME))
Address:

        You have been granted an option to purchase Common Stock of the Company,
subject to the terms and conditions of the Plan and this Stock Option Agreement,
as follows:

        Grant Number                               ((Grant_No))

        Date of Grant                              ((Grant_Date))

        Vesting Commencement Date                  ((VCD))

        Exercise Price per Share                   ((Price_per_Share))

        Total Number of Shares Granted             ((No_Shares_Granted))

        Total Exercise Price                       ((Total_Exercise_Price))

        Type of Option:                   X        Incentive Stock Option

                                                   Nonstatutory Stock Option

        Term/Expiration Date:                      ((Exp_Date))

        Exercise and Vesting Schedule:

        This Option is exercisable immediately, in whole or in part, conditioned
upon Optionee entering into a Restricted Stock Purchase Agreement with respect
to any unvested Option Shares. The Shares subject to this Option shall vest
and/or be released from the Company's repurchase option, as set forth in the
Restricted Stock Purchase Agreement, according to the following schedule:

                                      -1-

<PAGE>

        25% of the Shares subject to Option shall vest on the one year
anniversary of the Vesting Commencement Date. Thereafter, 1/48 of the Shares
subject to the Option shall vest monthly.

        Termination Period:

        You may exercise this Option not more than 90 days after your employment
or consulting relationship with the Company terminates, or for such longer
period upon your death or disability as provided in this Option Agreement. If
your status changes from Employee to Consultant or Consultant to Employee, this
Option Agreement shall remain in effect. In no case may you exercise this Option
after the Term/Expiration Date as provided above.

2.  AGREEMENT

        a. Grant of Option. The Plan Administrator of the Company hereby grants
to the Optionee named in the Notice of Grant attached as Part I of this
Agreement (the "Optionee") an option (the "Option") to purchase the number of
Shares, as set forth in the Notice of Grant, at the exercise price per share set
forth in the Notice of Grant (the "Exercise Price"), subject to the terms and
conditions of the Plan, which is incorporated herein by reference. Subject to
Section 14(b) of the Plan, in the event of a conflict between the terms and
conditions of the Plan and the terms and conditions of this Option Agreement,
the terms and conditions of the Plan shall prevail.

               If designated in the Notice of Grant as an Incentive Stock Option
("ISO"), this Option is intended to qualify as an ISO as defined in Section 422
of the Code. However, if this Option is intended to be an ISO, to the extent
that it exceeds the $100,000 rule of Code Section 422(d) it shall be treated as
a Nonstatutory Stock Option ("NSO").

         b. Exercise of Option. This Option shall be exercisable during its term
in accordance with the provisions of Section 9 of the Plan as follows:

               i. Right to Exercise.

                    (1) Subject to subsections 2(i)(b) through 2(i)(e) below,
this Option shall be exercisable cumulatively according to the vesting schedule
set out in the Notice of Grant. Alternatively, at the election of the Optionee,
this option may be exercised in whole or in part at any time as to Shares which
have not yet vested. Any unvested Shares shall be subject to the Company's
repurchase right (as set forth in the Restricted Stock Purchase Agreement,
attached hereto as Exhibit D-1).

                    (2) As a condition to exercising this Option with respect to
unvested Shares, the Optionee shall execute the Restricted Stock Purchase
Agreement.

                    (3) This Option may not be exercised for a fraction of a
Share.

                                      -2-

<PAGE>

                    (4) In the event of Optionee's death, disability or other
termination of Optionee's employment or consulting relationship, the
exercisability of the Option is governed by the applicable provisions of the
Plan and this Option Agreement.

                    (5) In no event may this Option be exercised after the date
of expiration of the term of this Option as set forth in the Notice of Grant.

               ii. Method of Exercise. This Option is exercisable by delivery of
an exercise notice, in the form attached as Exhibit A (the "Exercise Notice"),
which shall state the election to exercise the Option, the number of Shares in
respect of which the Option is being exercised (the "Exercised Shares"), and
such other representations and agreements as may be required by the Company
pursuant to the provisions of the Plan. The Exercise Notice shall be signed by
the Optionee and, if applicable, together with an executed copy of the
Restricted Stock Purchase Agreement, shall be delivered in person or by
certified mail to the Secretary of the Company. The Exercise Notice and, if
applicable, Restricted Stock Purchase Agreement shall be accompanied by payment
of the aggregate Exercise Price as to all Exercised Shares. This Option shall be
deemed to be exercised upon receipt by the Company of such fully executed
Exercise Notice and, if applicable, Restricted Stock Purchase Agreement
accompanied by such aggregate Exercise Price.

                  No Shares shall be issued pursuant to the exercise of an
Option unless such issuance and such exercise shall comply with all relevant
provisions of law and the requirements of any stock exchange upon which the
Shares may then be listed. Assuming such compliance, for income tax purposes the
Shares shall be considered transferred to the Optionee on the date on which the
Option is exercised with respect to such Shares.

         c. Method of Payment. Payment of the aggregate Exercise Price shall be
by any of the following, or a combination thereof, at the election of the
Optionee:

               i. cash; or

               ii. check; or

               iii. delivery of a properly executed exercise notice together
with such other documentation as the Administrator and the broker, if
applicable, shall require to effect an exercise of the Option and delivery to
the Company of the sale or loan proceeds required to pay the exercise price; or

               iv. surrender of other shares of Common Stock of the Company
which (A) in the case of Shares acquired pursuant to the exercise of a Company
option, have been owned by the Optionee for more than six (6) months on the date
of surrender, and (B) have a Fair Market Value on the date of surrender equal to
the Exercise Price of the Shares as to which the Option is being exercised; or

                                      -3-

<PAGE>

               v. delivery of Optionee's promissory note (the "Note") in the
form attached hereto as Exhibit C, in the amount of the aggregate Exercise Price
of the Exercised Shares together with the execution and delivery by the Optionee
of the Security Agreement attached hereto as Exhibit B. The Note shall bear
interest at a rate no less than the "applicable federal rate" prescribed under
the Code and its regulations at time of purchase, and shall be secured by a
pledge of the Shares purchased by the Note pursuant to the Security Agreement.

         d. Non-Transferability of Option. This Option may not be transferred in
any manner otherwise than by will or by the laws of descent or distribution and
may be exercised during the lifetime of Optionee only by the Optionee. The terms
of the Plan and this Option Agreement shall be binding upon the executors,
administrators, heirs, successors and assigns of the Optionee.

         e. Term of Option. This Option may be exercised only within the term
set out in the Notice of Grant, and may be exercised during such term only in
accordance with the Plan and the terms of this Option Agreement.

         f. Tax Consequences. Some of the federal and state tax consequences
relating to this Option, as of the date of this Option, are set forth below.
THIS SUMMARY IS NECESSARILY INCOMPLETE, AND THE TAX LAWS AND REGULATIONS ARE
SUBJECT TO CHANGE. THE OPTIONEE SHOULD CONSULT A TAX ADVISER BEFORE EXERCISING
THIS OPTION OR DISPOSING OF THE SHARES.

               i. Exercising the Option.

                    (1) Nonstatutory Stock Option. The Optionee may incur
regular federal income tax and California income tax liability upon exercise of
a NSO. The Optionee will be treated as having received compensation income
(taxable at ordinary income tax rates) equal to the excess, if any, of the Fair
Market Value of the Exercised Shares on the date of exercise over their
aggregate Exercise Price. If the Optionee is an Employee or a former Employee,
the Company will be required to withhold from his or her compensation or collect
from Optionee and pay to the applicable taxing authorities an amount in cash
equal to a percentage of this compensation income at the time of exercise, and
may refuse to honor the exercise and refuse to deliver Shares if such
withholding amounts are not delivered at the time of exercise.

                    (2) Incentive Stock Option. If this Option qualifies as an
ISO, the Optionee will have no regular federal income tax or California income
tax liability upon its exercise, although the excess, if any, of the Fair Market
Value of the Exercised Shares on the date of exercise over their aggregate
Exercise Price will be treated as an adjustment to alternative minimum taxable
income for federal tax purposes and may subject the Optionee to alternative
minimum tax in the year of exercise. In the event that the Optionee undergoes a
change of status from Employee to Consultant, any Incentive Stock Option of the
Optionee that remains unexercised shall cease to qualify as an Incentive Stock
Option and will be treated for tax purposes as a Nonstatutory Stock Option on
the ninety-first (91st) day following such change of status.

                                      -4-

<PAGE>

               ii. Disposition of Shares.

                    (1) NSO. If the Optionee holds NSO Shares for at least one
year, any gain realized on disposition of the Shares will be treated as
long-term capital gain for federal income tax purposes.

                    (2) ISO. If the Optionee holds ISO Shares for at least one
year after exercise and two years after the grant date, any gain realized on
disposition of the Shares will be treated as long-term capital gain for federal
income tax purposes. If the Optionee disposes of ISO Shares within one year
after exercise or two years after the grant date, any gain realized on such
disposition will be treated as compensation income (taxable at ordinary income
rates) to the extent of the excess, if any, of the lesser of (A) the difference
between the Fair Market Value of the Shares acquired on the date of exercise and
the aggregate Exercise Price, or (B) the difference between the sale price of
such Shares and the aggregate Exercise Price.

               iii. Notice of Disqualifying Disposition of ISO Shares. If the
Optionee sells or otherwise disposes of any of the Shares acquired pursuant to
an ISO on or before the later of (i) two years after the grant date, or (ii) one
year after the exercise date, the Optionee shall immediately notify the Company
in writing of such disposition. The Optionee agrees that he or she may be
subject to income tax withholding by the Company on the compensation income
recognized from such early disposition of ISO Shares by payment in cash or out
of the current earnings paid to the Optionee.

         g. Entire Agreement; Governing Law. The Plan is incorporated herein by
reference. The Plan and this Option Agreement constitute the entire agreement of
the parties with respect to the subject matter hereof and supersede in their
entirety all prior undertakings and agreements of the Company and Optionee with
respect to the subject matter hereof, and may not be modified adversely to the
Optionee's interest except by means of a writing signed by the Company and
Optionee. This agreement is governed by California law except for that body of
law pertaining to conflict of laws.

         By your signature and the signature of the Company's representative
below, you and the Company agree that this Option is granted under and governed
by the terms and conditions of the Plan and this Option Agreement. Optionee has
reviewed the Plan and this Option Agreement in their entirety, has had an
opportunity to obtain the advice of counsel prior to executing this Option
Agreement and fully understands all provisions of the Plan and Option Agreement.
Optionee hereby agrees to accept as binding, conclusive and final all decisions
or interpretations of the Administrator upon any questions relating to the Plan
and Option Agreement. Optionee further agrees to notify the Company upon any
change in the residence address indicated below.

                                      -5-

<PAGE>

OPTIONEE:                                STREAM MACHINE COMPANY

                                         By:
--------------------------------            ------------------------------------
Signature                                    Signature

--------------------------------
Print Name                                   Print Name

                                             Title:
                                                   -----------------------------
--------------------------------
Residence Address

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

                                      -6-

<PAGE>

                                CONSENT OF SPOUSE

            The undersigned spouse of ((Name)) has read and hereby approves the
terms and conditions of the Plan and this Option Agreement. In consideration of
the Company's granting his or her spouse the right to purchase Shares as set
forth in the Plan and this Option Agreement, the undersigned hereby agrees to be
irrevocably bound by the terms and conditions of the Plan and this Option
Agreement and further agrees that any community property interest shall be
similarly bound. The undersigned hereby appoints the undersigned's spouse as
attorney-in-fact for the undersigned with respect to any amendment or exercise
of rights under the Plan or this Option Agreement.

                                        ---------------------------------------
                                        Signature of Spouse

                                      -7-

<PAGE>

                                    EXHIBIT A

                             STREAM MACHINE COMPANY

                                 1996 STOCK PLAN

                                 EXERCISE NOTICE

STREAM MACHINE COMPANY
580 Cottonwood Drive
Milpitas, CA 95035

Attention:  Secretary

         1. Exercise of Option. Effective as of today, ________________, 200__,
the undersigned ("Purchaser") hereby elects to purchase ______________ shares
(the "Shares") of the Common Stock of Stream Machine Company (the "Company")
under and pursuant to the 1996 Stock Plan (the "Plan") and the Stock Option
Agreement dated ((Grant_Date)) (the "Option Agreement"). The purchase price for
the Shares shall be $ , as required by the Option Agreement.

         2. Delivery of Payment. Purchaser herewith delivers to the Company the
full purchase price for the Shares.

         3. Representations of Purchaser. Purchaser acknowledges that Purchaser
has received, read and understood the Plan and the Option Agreement and agrees
to abide by and be bound by their terms and conditions.

         4. Rights as Shareholder. Until the issuance (as evidenced by the
appropriate entry on the books of the Company or of a duly authorized transfer
agent of the Company) of the stock certificate evidencing such Shares, no right
to vote or receive dividends or any other rights as a shareholder shall exist
with respect to the Optioned Stock, notwithstanding the exercise of the Option.
A share certificate for the number of Shares so acquired shall be issued to the
Optionee as soon as practicable after exercise of the Option. No adjustment will
be made for a dividend or other right for which the record date is prior to the
date the stock certificate is issued, except as provided in Section 12 of the
Plan.

         5. Tax Consultation. Purchaser understands that Purchaser may suffer
adverse tax consequences as a result of Purchaser's purchase or disposition of
the Shares. Purchaser represents that Purchaser has consulted with any tax
consultants Purchaser deems advisable in connection with the purchase or
disposition of the Shares and that Purchaser is not relying on the Company for
any tax advice.

                                      -8-

<PAGE>

         6. Entire Agreement; Governing Law. The Plan and Option Agreement are
incorporated herein by reference. This Agreement, the Plan and the Option
Agreement constitute the entire agreement of the parties with respect to the
subject matter hereof and supersede in their entirety all prior undertakings and
agreements of the Company and Purchaser with respect to the subject matter
hereof, and may not be modified adversely to the Purchaser's interest except by
means of a writing signed by the Company and Purchaser. This agreement is
governed by California law except for that body of law pertaining to conflict of
laws.

Submitted by:                        Accepted by:

OPTIONEE                             STREAM MACHINE COMPANY

                                     By:
-----------------------------           ----------------------------------------
Signature                               Signature

-----------------------------
Print Name                              Print Name

                                     Title:
                                           -------------------------------------

Address:                             Address:

-----------------------------        580 Cottonwood Drive
                                     Milpitas, CA 95035
-----------------------------

                                      -9-
<PAGE>
                                    EXHIBIT B

                               SECURITY AGREEMENT

            This Security Agreement is made as of __________, 200___ between
Stream Machine Company, a California corporation ("Pledgee"), and ("Pledgor").

                                    Recitals

            Pursuant to Pledgor's election to purchase Shares under the Option
Agreement dated (the "Option"), between Pledgor and Pledgee under Pledgee's 1996
Stock Plan, and Pledgor's election under the terms of the Option to pay for such
shares with his promissory note (the "Note"), Pledgor has purchased
________________ shares of Pledgee's Common Stock (the "Shares") at a price of $
per share, for a total purchase price of $ _____________. The Note and the
obligations thereunder are as set forth in Exhibit C to the Option.

            NOW, THEREFORE, it is agreed as follows:

         1. Creation and Description of Security Interest. In consideration of
the transfer of the Shares to Pledgor under the Option Agreement, Pledgor,
pursuant to the California Commercial Code, hereby pledges all of such Shares
(herein sometimes referred to as the "Collateral") represented by certificate
number ______, duly endorsed in blank or with executed stock powers, and
herewith delivers said certificate to the Secretary of Pledgee ("Pledgeholder"),
who shall hold said certificate subject to the terms and conditions of this
Security Agreement.

         The pledged stock (together with an executed blank stock assignment for
use in transferring all or a portion of the Shares to Pledgee if, as and when
required pursuant to this Security Agreement) shall be held by the Pledgeholder
as security for the repayment of the Note, and any extensions or renewals
thereof, to be executed by Pledgor pursuant to the terms of the Option, and the
Pledgeholder shall not encumber or dispose of such Shares except in accordance
with the provisions of this Security Agreement.

         2. Pledgor's Representations and Covenants. To induce Pledgee to enter
into this Security Agreement, Pledgor represents and covenants to Pledgee, its
successors and assigns, as follows:

               a. Payment of Indebtedness. Pledgor will pay the principal sum of
the Note secured hereby, together with interest thereon, at the time and in the
manner provided in the Note.

                                      -10-

<PAGE>

               b. Encumbrances. The Shares are free of all other encumbrances,
defenses and liens, and Pledgor will not further encumber the Shares without the
prior written consent of Pledgee.

               c. Margin Regulations. In the event that Pledgee's Common Stock
is now or later becomes margin-listed by the Federal Reserve Board and Pledgee
is classified as a "lender" within the meaning of the regulations under Part 207
of Title 12 of the Code of Federal Regulations ("Regulation G"), Pledgor agrees
to cooperate with Pledgee in making any amendments to the Note or providing any
additional collateral as may be necessary to comply with such regulations.

         3. Voting Rights. During the term of this pledge and so long as all
payments of principal and interest are made as they become due under the terms
of the Note, Pledgor shall have the right to vote all of the Shares pledged
hereunder.

         4. Stock Adjustments. In the event that during the term of the pledge
any stock dividend, reclassification, readjustment or other changes are declared
or made in the capital structure of Pledgee, all new, substituted and additional
shares or other securities issued by reason of any such change shall be
delivered to and held by the Pledgee under the terms of this Security Agreement
in the same manner as the Shares originally pledged hereunder. In the event of
substitution of such securities, Pledgor, Pledgee and Pledgeholder shall
cooperate and execute such documents as are reasonable so as to provide for the
substitution of such Collateral and, upon such substitution, references to
"Shares" in this Security Agreement shall include the substituted shares of
capital stock of Pledgor as a result thereof.

         5. Options and Rights. In the event that, during the term of this
pledge, subscription Options or other rights or options shall be issued in
connection with the pledged Shares, such rights, Options and options shall be
the property of Pledgor and, if exercised by Pledgor, all new stock or other
securities so acquired by Pledgor as it relates to the pledged Shares then held
by Pledgeholder shall be immediately delivered to Pledgeholder, to be held under
the terms of this Security Agreement in the same manner as the Shares pledged.

         6. Default. Pledgor shall be deemed to be in default of the Note and of
this Security Agreement in the event:

               a. Payment of principal or interest on the Note shall be
delinquent for a period of 10 days or more; or

               b. Pledgor fails to perform any of the covenants set forth in the
Option or contained in this Security Agreement for a period of 10 days after
written notice thereof from Pledgee.

         In the case of an event of Default, as set forth above, Pledgee shall
have the right to accelerate payment of the Note upon notice to Pledgor, and
Pledgee shall thereafter be entitled to pursue its remedies under the California
Commercial Code.

                                      -11-

<PAGE>

         7. Release of Collateral. Subject to any applicable contrary rules
under Regulation G, there shall be released from this pledge a portion of the
pledged Shares held by Pledgeholder here- under upon payments of the principal
of the Note. The number of the pledged Shares which shall be released shall be
that number of full Shares which bears the same proportion to the initial number
of Shares pledged hereunder as the payment of principal bears to the initial
full principal amount of the Note.

         8. Withdrawal or Substitution of Collateral. Pledgor shall not sell,
withdraw, pledge, substitute or otherwise dispose of all or any part of the
Collateral without the prior written consent of Pledgee.

         9. Term. The within pledge of Shares shall continue until the payment
of all indebtedness secured hereby, at which time the remaining pledged stock
shall be promptly delivered to Pledgor, subject to the provisions for prior
release of a portion of the Collateral as provided in paragraph 7 above.

         10. Insolvency. Pledgor agrees that if a bankruptcy or insolvency
proceeding is instituted by or against it, or if a receiver is appointed for the
property of Pledgor, or if Pledgor makes an assignment for the benefit of
creditors, the entire amount unpaid on the Note shall become immediately due and
payable, and Pledgee may proceed as provided in the case of default.

         11. Pledgeholder Liability. In the absence of willful or gross
negligence, Pledgeholder shall not be liable to any party for any of his acts,
or omissions to act, as Pledgeholder.

         12. Invalidity of Particular Provisions. Pledgor and Pledgee agree that
the enforceability or invalidity of any provision or provisions of this Security
Agreement shall not render any other provision or provisions herein contained
unenforceable or invalid.

         13. Successors or Assigns. Pledgor and Pledgee agree that all of the
terms of this Security Agreement shall be binding on their respective successors
and assigns, and that the term "Pledgor" and the term "Pledgee" as used herein
shall be deemed to include, for all purposes, the respective designees,
successors, assigns, heirs, executors and administrators.

         14. Governing Law. This Security Agreement shall be interpreted and
governed under the laws of the State of California.

                                      -12-

<PAGE>

            IN WITNESS WHEREOF, the parties hereto have executed this Agreement
as of the day and year first above written.

        "PLEDGOR"                           By:
                                               ---------------------------------

                                            ------------------------------------
                                            Print Name

                                            Address:

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

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

        "PLEDGEE"                           STREAM MACHINE COMPANY,
                                            a California corporation

                                            By:
                                               ---------------------------------

                                            Title:
                                                  ------------------------------

        "PLEDGEHOLDER"                      ------------------------------------
                                            Assistant Secretary of
                                            Stream Machine Company

                                      -13-

<PAGE>

                                    EXHIBIT C

                                      NOTE

$_________________                                            Milpitas, CA 95035
                                                             _____________, 200_

        FOR VALUE RECEIVED, ((Name)) promises to pay to Stream Machine Company,
a California corporation (the "Company"), or order, the principal sum of
________________________________ ($__________), together with interest on the
unpaid principal hereof from the date hereof at the rate of _______________
percent (____%) per annum, compounded semiannually.

        Principal and interest shall be due and payable on __________, 200__.
Should the undersigned fail to make full payment of principal or interest for a
period of 10 days or more after the due date thereof, the whole unpaid balance
on this Note of principal and interest shall become immediately due at the
option of the holder of this Note. Payments of principal and interest shall be
made in lawful money of the United States of America.

        The undersigned may at any time prepay all or any portion of the
principal or interest owing hereunder.

        This Note is subject to the terms of the Option, dated as of . This Note
is secured in part by a pledge of the Company's Common Stock under the terms of
a Security Agreement of even date herewith and is subject to all the provisions
thereof.

        The holder of this Note shall have full recourse against the
undersigned, and shall not be required to proceed against the collateral
securing this Note in the event of default.

        In the event the undersigned shall cease to be an employee or consultant
of the Company for any reason, this Note shall, at the option of the Company, be
accelerated, and the whole unpaid balance on this Note of principal and accrued
interest shall be immediately due and payable.

        Should any action be instituted for the collection of this Note, the
reasonable costs and attorneys' fees therein of the holder shall be paid by the
undersigned.

                                                   -----------------------------
                                                   (Print Name)

                                                   -----------------------------
                                                   (Signature)

<PAGE>

                                   EXHIBIT D-1

                                 1996 STOCK PLAN

                       RESTRICTED STOCK PURCHASE AGREEMENT

         Unless otherwise defined herein, the terms defined in the Plan shall
have the same defined meanings in this Restricted Stock Purchase Agreement.

         WHEREAS the Purchaser named in the Notice of Grant, (the "Purchaser")
is an Employee or Consultant of the Company, and the Purchaser's continued
participation is considered by the Company to be important for the Company's
continued growth; and

         WHEREAS in order to give the Purchaser an opportunity to acquire an
equity interest in the Company as an incentive for the Purchaser to participate
in the affairs of the Company, the Administrator has granted to the Purchaser a
Stock Purchase Right subject to the terms and conditions of the Plan and the
Notice of Grant, which are incorporated herein by reference, and pursuant to
this Restricted Stock Purchase Agreement (the "Agreement").

         NOW THEREFORE, the parties agree as follows:

         1. Sale of Stock. The Company hereby agrees to sell to the Purchaser
and the Purchaser hereby agrees to purchase shares of the Company's Common Stock
(the "Shares"), at the per Share purchase price and as otherwise described in
the Notice of Grant.

         2. Payment of Purchase Price. The purchase price for the Shares may be
paid by delivery to the Company at the time of execution of this Agreement of
cash, a check, or some combination thereof.

         3. Repurchase Option.

               (a) In the event the Purchaser's Continuous Status as an Employee
or Consultant terminates for any or no reason (including death or disability)
before all of the Shares are released from the Company's Repurchase Option (see
Section 4), the Company shall, upon the date of such termination (as reasonably
fixed and determined by the Company) have an irrevocable, exclusive option (the
"Repurchase Option") for a period of ninety (90) days from such date to
repurchase up to that number of shares which constitute the Unreleased Shares
(as defined in Section 4) at the original purchase price per share (the
"Repurchase Price"). The Repurchase Option shall be exercised by the Company by
delivering written notice to the Purchaser or the Purchaser's executor (with a
copy to the Escrow Holder) AND, at the Company's option, (i) by delivering to
the Purchaser or the Purchaser's executor a check in the amount of the aggregate
Repurchase Price, or (ii) by canceling an amount of the Purchaser's indebtedness
to the Company equal to the aggregate Repurchase Price, or (iii) by a
combination of (i) and (ii) so that the combined payment and cancellation of

                                      -2-

<PAGE>

indebtedness equals the aggregate Repurchase Price. Upon delivery of such notice
and the payment of the aggregate Repurchase Price, the Company shall become the
legal and beneficial owner of the Shares being repurchased and all rights and
interests therein or relating thereto, and the Company shall have the right to
retain and transfer to its own name the number of Shares being repurchased by
the Company.

               (b) Whenever the Company shall have the right to repurchase
Shares hereunder, the Company may designate and assign one or more employees,
officers, directors or shareholders of the Company or other persons or
organizations to exercise all or a part of the Company's purchase rights under
this Agreement and purchase all or a part of such Shares. If the Fair Market
Value of the Shares to be repurchased on the date of such designation or
assignment (the "Repurchase FMV") exceeds the aggregate Repurchase Price of such
Shares, then each such designee or assignee shall pay the Company cash equal to
the difference between the Repurchase FMV and the aggregate Repurchase Price of
such Shares.

         4. Release of Shares From Repurchase Option.

               (a) Twenty-Five percent (25%) of the Shares shall be released
from the Company's Repurchase Option one year after the Date of Grant and 1/48
of the Shares at the end of each month thereafter, provided that the Purchaser's
Continuous Status as an Employee or Consultant has not terminated prior to the
date of any such release.

               (b) Any of the Shares that have not yet been released from the
Repurchase Option are referred to herein as "Unreleased Shares."

               (c) The Shares that have been released from the Repurchase Option
shall be delivered to the Purchaser at the Purchaser's request (see Section 6).

         5. Restriction on Transfer. Except for the escrow described in Section
6 or the transfer of the Shares to the Company or its assignees contemplated by
this Agreement, none of the Shares or any beneficial interest therein shall be
transferred, encumbered or otherwise disposed of in any way until such Shares
are released from the Company's Repurchase Option in accordance with the
provisions of this Agreement, other than by will or the laws of descent and
distribution.

         6. Escrow of Shares.

               (a) To ensure the availability for delivery of the Purchaser's
Unreleased Shares upon repurchase by the Company pursuant to the Repurchase
Option, the Purchaser shall, upon execution of this Agreement, deliver and
deposit with an escrow holder designated by the Company (the "Escrow Holder")
the share certificates representing the Unreleased Shares, together with the
stock assignment duly endorsed in blank, attached hereto as Exhibit D-2. The
Unreleased Shares and stock assignment shall be held by the Escrow Holder,
pursuant to the Joint Escrow Instructions of

                                      -3-

<PAGE>

the Company and Purchaser attached hereto as Exhibit D-3, until such time as the
Company's Repurchase Option expires. As a further condition to the Company's
obligations under this Agreement, the Company may require the spouse of
Purchaser, if any, to execute and deliver to the Company the Consent of Spouse
attached hereto as Exhibit D-4.

               (b) The Escrow Holder shall not be liable for any act it may do
or omit to do with respect to holding the Unreleased Shares in escrow while
acting in good faith and in the exercise of its judgment.

               (c) If the Company or any assignee exercises the Repurchase
Option hereunder, the Escrow Holder, upon receipt of written notice of such
exercise from the proposed transferee, shall take all steps necessary to
accomplish such transfer.

               (d) When the Repurchase Option has been exercised or expires
unexercised or a portion of the Shares has been released from the Repurchase
Option, upon request the Escrow Holder shall promptly cause a new certificate to
be issued for the released Shares and shall deliver the certificate to the
Company or the Purchaser, as the case may be.

               (e) Subject to the terms hereof, the Purchaser shall have all the
rights of a shareholder with respect to the Shares while they are held in
escrow, including without limitation, the right to vote the Shares and to
receive any cash dividends declared thereon. If, from time to time during the
term of the Repurchase Option, there is (i) any stock dividend, stock split or
other change in the Shares, or (ii) any merger or sale of all or substantially
all of the assets or other acquisition of the Company, any and all new,
substituted or additional securities to which the Purchaser is entitled by
reason of the Purchaser's ownership of the Shares shall be immediately subject
to this escrow, deposited with the Escrow Holder and included thereafter as
"Shares" for purposes of this Agreement and the Repurchase Option.

         7. Legends. The share certificate evidencing the Shares issued
hereunder shall be endorsed with the following legend (in addition to any legend
required under applicable state securities laws):

        THE SHARES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO CERTAIN
RESTRICTIONS UPON TRANSFER AND RIGHTS OF REPURCHASE AS SET FORTH IN AN AGREEMENT
BETWEEN THE COMPANY AND THE SHAREHOLDER, A COPY OF WHICH IS ON FILE WITH THE
SECRETARY OF THE COMPANY.

         8. Adjustment for Stock Split. All references to the number of Shares
and the purchase price of the Shares in this Agreement shall be appropriately
adjusted to reflect any stock split, stock dividend or other change in the
Shares which may be made by the Company after the date of this Agreement.

                                      -4-

<PAGE>

         9. Tax Consequences. The Purchaser has reviewed with the Purchaser's
own tax advisors the federal, state, local and foreign tax consequences of this
investment and the transactions contemplated by this Agreement. The Purchaser is
relying solely on such advisors and not on any statements or representations of
the Company or any of its agents. The Purchaser understands that the Purchaser
(and not the Company) shall be responsible for the Purchaser's own tax liability
that may arise as a result of the transactions contemplated by this Agreement.
The Purchaser understands that Section 83 of the Internal Revenue Code of 1986,
as amended (the "Code"), taxes as ordinary income the difference between the
purchase price for the Shares and the Fair Market Value of the Shares as of the
date any restrictions on the Shares lapse. In this context, "restriction"
includes the right of the Company to buy back the Shares pursuant to the
Repurchase Option. The Purchaser understands that the Purchaser may elect to be
taxed at the time the Shares are purchased rather than when and as the
Repurchase Option expires by filing an election under Section 83(b) of the Code
with the IRS within 30 days from the date of purchase. The form for making this
election is attached as Exhibit A-5 hereto.

               THE PURCHASER ACKNOWLEDGES THAT IT IS THE PURCHASER'S SOLE
RESPONSIBILITY AND NOT THE COMPANY'S TO FILE TIMELY THE ELECTION UNDER SECTION
83(b), EVEN IF THE PURCHASER REQUESTS THE COMPANY OR ITS REPRESENTATIVES TO MAKE
THIS FILING ON THE PURCHASER'S BEHALF.

         10. General Provisions.

               (f) This Agreement shall be governed by the laws of the State of
California. This Agreement, subject to the terms and conditions of the Plan and
the Notice of Grant, represents the entire agreement between the parties with
respect to the purchase of the Shares by the Purchaser. Subject to Section 14(b)
of the Plan, in the event of a conflict between the terms and conditions of the
Plan and the terms and conditions of this Agreement, the terms and conditions of
the Plan shall prevail. Unless otherwise defined herein, the terms defined in
the Plan shall have the same defined meanings in this Agreement.

               (g) Any notice, demand or request required or permitted to be
given by either the Company or the Purchaser pursuant to the terms of this
Agreement shall be in writing and shall be deemed given when delivered
personally or deposited in the U.S. mail, First Class with postage prepaid, and
addressed to the parties at the addresses of the parties set forth at the end of
this Agreement or such other address as a party may request by notifying the
other in writing.

               Any notice to the Escrow Holder shall be sent to the Company's
address with a copy to the other party hereto.

               (h) The rights of the Company under this Agreement shall be
transferable to any one or more persons or entities, and all covenants and
agreements hereunder shall inure to the benefit of, and be enforceable by the
Company's successors and assigns. The rights and obligations of the

                                      -5-

<PAGE>

               Purchaser under this Agreement may only be assigned with the
prior written consent of the Company.

               (i) Either party's failure to enforce any provision of this
Agreement shall not in any way be construed as a waiver of any such provision,
nor prevent that party from thereafter enforcing any other provision of this
Agreement. The rights granted both parties hereunder are cumulative and shall
not constitute a waiver of either party's right to assert any other legal remedy
available to it.

               (j) The Purchaser agrees upon request to execute any further
documents or instruments necessary or desirable to carry out the purposes or
intent of this Agreement.

               (k) PURCHASER ACKNOWLEDGES AND AGREES THAT THE VESTING OF SHARES
PURSUANT TO SECTION 4 HEREOF IS EARNED ONLY BY CONTINUING SERVICE AS AN EMPLOYEE
OR CONSULTANT AT THE WILL OF THE COMPANY (AND NOT THROUGH THE ACT OF BEING HIRED
OR PURCHASING SHARES HEREUNDER). PURCHASER FURTHER ACKNOWLEDGES AND AGREES THAT
THIS AGREEMENT, THE TRANSACTIONS CONTEMPLATED HEREUNDER AND THE VESTING SCHEDULE
SET FORTH HEREIN DO NOT CONSTITUTE AN EXPRESS OR IMPLIED PROMISE OF CONTINUED
ENGAGEMENT AS AN EMPLOYEE OR CONSULTANT FOR THE VESTING PERIOD, FOR ANY PERIOD,
OR AT ALL, AND SHALL NOT INTERFERE WITH PURCHASER'S RIGHT OR THE COMPANY'S RIGHT
TO TERMINATE PURCHASER'S EMPLOYMENT OR CONSULTING RELATIONSHIP AT ANY TIME, WITH
OR WITHOUT CAUSE.

         By Purchaser's signature below, Purchaser represents that he or she is
familiar with the terms and provisions of the Plan, and hereby accepts this
Agreement subject to all of the terms and provisions thereof. Purchaser has
reviewed the Plan and this Agreement in their entirety, has had an opportunity
to obtain the advice of counsel prior to executing this Agreement and fully
understands all provisions of this Agreement. Purchaser agrees to accept as
binding, conclusive and final all decisions or interpretations of the
Administrator upon any questions arising under the Plan or this Agreement.
Purchaser further agrees to notify the Company upon any change in the residence
indicated in the Notice of Grant.

DATED:
      -----------------------

PURCHASER:                          STREAM MACHINE COMPANY

                                    By:
------------------------------         -----------------------------------------
Signature

                                    Title:
------------------------------            --------------------------------------
Print Name

                                      -6-

<PAGE>

                                   EXHIBIT D-2

                      ASSIGNMENT SEPARATE FROM CERTIFICATE

         FOR VALUE RECEIVED I, __________________________, hereby sell, assign
and transfer unto (__________) shares of the Common Stock of Stream Machine
Company standing in my name of the books of said corporation represented by
Certificate No. _____ herewith and do hereby irrevocably constitute and appoint
to transfer the said stock on the books of the within named corporation with
full power of substitution in the premises.

        This Stock Assignment may be used only in accordance with the Restricted
Stock Purchase Agreement (the "Agreement") between________________________ and
the undersigned dated ______________, 200__.

Dated: ______________, 200_

                                    Signature:
                                              ----------------------------------

--------------------------------------------------------------------------------
INSTRUCTIONS: Please do not fill in any blanks other than the signature line.
The purpose of this assignment is to enable the Company to exercise the
Repurchase Option, as set forth in the Agreement, without requiring additional
signatures on the part of the Purchaser.
--------------------------------------------------------------------------------

                                      -7-

<PAGE>

                                   EXHIBIT D-3

                            JOINT ESCROW INSTRUCTIONS

                                                            _____________, 200_

Corporate Secretary
Stream Machine Company
580 Cottonwood Drive
Milpitas, CA 95035

Dear _________________:

        As Escrow Agent for both Stream Machine Company, a California
corporation (the "Company"), and the undersigned purchaser of stock of the
Company (the "Purchaser"), you are hereby authorized and directed to hold the
documents delivered to you pursuant to the terms of that certain Restricted
Stock Purchase Agreement ("Agreement") between the Company and the undersigned,
in accordance with the following instructions:

        1. In the event the Company and/or any assignee of the Company (referred
to collectively as the "Company") exercises the Company's Repurchase Option set
forth in the Agreement, the Company shall give to Purchaser and you a written
notice specifying the number of shares of stock to be purchased, the purchase
price, and the time for a closing hereunder at the principal office of the
Company. Purchaser and the Company hereby irrevocably authorize and direct you
to close the transaction contemplated by such notice in accordance with the
terms of said notice.

        2. At the closing, you are directed (a) to date the stock assignments
necessary for the transfer in question, (b) to fill in the number of shares
being transferred, and (c) to deliver same, together with the certificate
evidencing the shares of stock to be transferred, to the Company or its
assignee, against the simultaneous delivery to you of the purchase price (by
cash, a check, or some combination thereof) for the number of shares of stock
being purchased pursuant to the exercise of the Company's Repurchase Option.

        3. Purchaser irrevocably authorizes the Company to deposit with you any
certificates evidencing shares of stock to be held by you hereunder and any
additions and substitutions to said shares as defined in the Agreement.
Purchaser does hereby irrevocably constitute and appoint you as Purchaser's
attorney-in-fact and agent for the term of this escrow to execute with respect
to such securities all documents necessary or appropriate to make such
securities negotiable and to complete any transaction herein contemplated,
including but not limited to the filing with any applicable state blue sky
authority of any required applications for consent to, or notice of transfer of,
the securities. Subject to the provisions of this paragraph 3, Purchaser shall
exercise all rights and privileges of a shareholder of the Company while the
stock is held by you.

                                      -8-

<PAGE>

        4. Upon written request of the Purchaser, but no more than once per
calendar year, unless the Company's Repurchase Option has been exercised, you
shall deliver to Purchaser a certificate or certificates representing so many
shares of stock as are not then subject to the Company's Repurchase Option.
Within 90 days after cessation of Purchaser's continuous employment by or
services to the Company, or any parent or subsidiary of the Company, you shall
deliver to Purchaser a certificate or certificates representing the aggregate
number of shares held or issued pursuant to the Agreement and not purchased by
the Company or its assignees pursuant to exercise of the Company's Repurchase
Option.

        5. If at the time of termination of this escrow you should have in your
possession any documents, securities, or other property belonging to Purchaser,
you shall deliver all of the same to Purchaser and shall be discharged of all
further obligations hereunder.

        6. Your duties hereunder may be altered, amended, modified or revoked
only by a writing signed by all of the parties hereto.

        7. You shall be obligated only for the performance of such duties as are
specifically set forth herein and may rely and shall be protected in relying or
refraining from acting on any instrument reasonably believed by you to be
genuine and to have been signed or presented by the proper party or parties. You
shall not be personally liable for any act you may do or omit to do hereunder as
Escrow Agent or as attorney-in-fact for Purchaser while acting in good faith,
and any act done or omitted by you pursuant to the advice of your own attorneys
shall be conclusive evidence of such good faith.

        8. You are hereby expressly authorized to disregard any and all warnings
given by any of the parties hereto or by any other person or corporation,
excepting only orders or process of courts of law, and are hereby expressly
authorized to comply with and obey orders, judgments or decrees of any court. In
case you obey or comply with any such order, judgment or decree, you shall not
be liable to any of the parties hereto or to any other person, firm or
corporation by reason of such compliance, notwithstanding any such order,
judgment or decree being subsequently reversed, modified, annulled, set aside,
vacated or found to have been entered without jurisdiction.

        9. You shall not be liable in any respect on account of the identity,
authorities or rights of the parties executing or delivering or purporting to
execute or deliver the Agreement or any documents or papers deposited or called
for hereunder.

        10. You shall not be liable for the outlawing of any rights under the
statute of limitations with respect to these Joint Escrow Instructions or any
documents deposited with you.

        11. You shall be entitled to employ such legal counsel and other experts
as you may deem necessary properly to advise you in connection with your
obligations hereunder, may rely upon the advice of such counsel, and may pay
such counsel reasonable compensation therefor.

                                      -9-

<PAGE>

        12. Your responsibilities as Escrow Agent hereunder shall terminate if
you shall cease to be an officer or agent of the Company or if you shall resign
by written notice to each party. In the event of any such termination, the
Company shall appoint a successor Escrow Agent.

        13. If you reasonably require other or further instruments in connection
with these Joint Escrow Instructions or obligations in respect hereto, the
necessary parties hereto shall join in furnishing such instruments.

        14. It is understood and agreed that should any dispute arise with
respect to the delivery and/or ownership or right of possession of the
securities held by you hereunder, you are authorized and directed to retain in
your possession without liability to anyone all or any part of said securities
until such disputes shall have been settled either by mutual written agreement
of the parties concerned or by a final order, decree or judgment of a court of
competent jurisdiction after the time for appeal has expired and no appeal has
been perfected, but you shall be under no duty whatsoever to institute or defend
any such proceedings.

        15. Any notice required or permitted hereunder shall be given in writing
and shall be deemed effectively given upon personal delivery or upon deposit in
the United States Post Office, by registered or certified mail with postage and
fees prepaid, addressed to each of the other parties thereunto entitled at the
following addresses or at such other addresses as a party may designate by ten
days' advance written notice to each of the other parties hereto.

               COMPANY:       Stream Machine Company
                              580 Cottonwood Drive
                              Milpitas, CA 95035

               PURCHASER:

               ESCROW AGENT:  Corporate Secretary
                              WILSON SONSINI GOODRICH & ROSATI
                              650 Page Mill Road
                              Palo Alto, CA 94304-1050

        16. By signing these Joint Escrow Instructions, you become a party
hereto only for the purpose of said Joint Escrow Instructions; you do not become
a party to the Agreement.

                                      -10-

<PAGE>

        17. This instrument shall be binding upon and inure to the benefit of
the parties hereto, and their respective successors and permitted assigns.

        18. These Joint Escrow Instructions shall be governed by, and construed
and enforced in accordance with, the laws of the State of California.

                                                     Very truly yours,

                                                     STREAM MACHINE COMPANY

                                                     By:
                                                        ------------------------

                                                     Title:
                                                           ---------------------

                                                     PURCHASER:

                                                     ---------------------------
                                                     (Signature)

                                                     ---------------------------
                                                     (Typed or Printed Name)
ESCROW AGENT:

----------------------------
Corporate Secretary

                                      -11-

<PAGE>

                                   EXHIBIT D-4

                                CONSENT OF SPOUSE

        I, ____________________, spouse of ((Name)), have read and approve the
foregoing Restricted Stock Purchase Agreement (the "Agreement"). In
consideration of the Company's grant to my spouse of the right to purchase
shares of Stream Machine Company, as set forth in the Agreement, I hereby
appoint my spouse as my attorney-in-fact in respect to the exercise of any
rights under the Agreement and agree to be bound by the provisions of the
Agreement insofar as I may have any rights in said Agreement or any shares
issued pursuant thereto under the community property laws or similar laws
relating to marital property in effect in the state of our residence as of the
date of the signing of the foregoing Agreement.

Dated: _______________, 200__

                                                     ---------------------------
                                                     Signature of Spouse

                                      -12-

<PAGE>

                                   EXHIBIT D-5
                          ELECTION UNDER SECTION 83(b)
                      OF THE INTERNAL REVENUE CODE OF 1986

The undersigned taxpayer hereby elects, pursuant to Section 83(b) of the
Internal Revenue Code of 1986, as amended, to include in taxpayer's gross income
for the current taxable year the amount of any compensation taxable to taxpayer
in connection with his or her receipt of the property described below:

1.      The name, address, taxpayer identification number and taxable year of
        the undersigned are as follows:

        NAME:  TAXPAYER:                               SPOUSE:
                        ----------------------                 -----------------

        ADDRESS:
                ----------------------------------------------------------------

        IDENTIFICATION NO.:     TAXPAYER:                   SPOUSE:
                                         -----------------         -------------

        TAXABLE YEAR:  200___

2.      The property with respect to which the election is made is described as
        follows:_____________ shares (the "Shares") of the Common Stock of
        Stream Machine Company (the "Company").

3.      The date on which the property was transferred is: _____________, 200___

4.      The property is subject to the following restrictions:

        The Shares may be repurchased by the Company, or its assignee, upon
        certain events. This right lapses with regard to a portion of the Shares
        based on the continued performance of services by the taxpayer over
        time.

5.      The fair market value at the time of transfer, determined without regard
        to any restriction other than a restriction which by its terms will
        never lapse, of such property is: $_______________.

6.      The amount (if any) paid for such property is: $ ______.

The undersigned has submitted a copy of this statement to the person for whom
the services were performed in connection with the undersigned's receipt of the
above-described property. The transferee of such property is the person
performing the services in connection with the transfer of said property.

The undersigned understands that the foregoing election may not be revoked
except with the consent of the Commissioner.

Dated:____________________, 200__
                                  ----------------------------------------------
                                  Taxpayer

The undersigned spouse of taxpayer joins in this election.

Dated:____________________, 200__
                                  ----------------------------------------------
                                  Spouse of Taxpayer

                                      -13-

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