Document:

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                                                                   Exhibit 10.30
                           SECOND AMENDMENT TO AMENDED
                          AND RESTATED CREDIT AGREEMENT

         This Second Amendment to Amended and Restated Credit Agreement (this
"Amendment"), is entered into as of the 13th day of November, 2000, by and
between MORTGAGE PORTFOLIO SERVICES, INC., a Delaware corporation ("Borrower"),
NAB ASSET CORPORATION, a Texas corporation ("Guarantor") and BANK UNITED, a
federal savings bank, as Agent ("Agent") and the Lenders party hereto, as
defined below. Capitalized terms used but not defined herein have the meanings
assigned to them in the Credit Agreement, as the same has been or may be amended
or supplemented from time to time.

         Section 1. Recitals. Borrower, Guarantor, Agent, and Lenders entered
into that certain Amended and Restated Warehousing Credit and Security Agreement
dated as of August 28, 2000 (the "Credit Agreement") for the purposes and
consideration herein expressed, pursuant to which Lenders agreed to make loans
to Borrower as therein provided. Borrower, Guarantor, Agent, and Lenders desire
to amend the Credit Agreement, and therefore Borrower, Guarantor, Agent, and
Lenders hereby agree as follows, intending to be legally bound:

         Section 2. Amendments. The Credit Agreement is hereby amended and
supplemented as follows:

         (a) Section 1.1 of the Credit Agreement is hereby amended by the
         addition or amendment of the following definitions:

                  "Termination Date" shall mean April 30, 2001, or such earlier
                  date upon which Lenders' obligation to fund shall be
                  terminated pursuant to the terms of this Agreement.

         (b) Section 2.1(b)(4) of the Credit Agreement is deleted in its
         entirety, and the following is substituted therefor:

                                            "(4) The aggregate amount of Wet
                                    Advances against Mortgage Loans outstanding
                                    at any one time shall not exceed TWENTY-TWO
                                    MILLION DOLLARS ($22,000,000.00)."

         (c) Section 2.5(a) of the Credit Agreement is deleted in its entirety,
         and the following is substituted therefor:

                           "(a) The outstanding principal amount of all Advances
                  shall be payable in full on April 30, 2001."

                                                                          Page 1
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         (d) In connection with the execution of this Amendment, Borrower will
         deliver to the Lenders new promissory notes (the "Credit Notes") dated
         as of November 13, 2000, and payable to the Lenders, which Credit Notes
         are given to Lenders in replacement of the promissory notes dated as of
         October 15, 2000 (the "10/2000 Notes"), which 10/2000 Notes were given
         in replacement of promissory notes dated August 28, 2000, executed by
         Borrower and payable to the order of the Lenders (the "Original
         Restated Notes"), as more fully set out in each such Replacement Note,
         and not in novation or discharge thereof. The definition of the term
         "Notes" in the Credit Agreement is hereby amended to mean the Credit
         Notes and all renewals, extensions, modifications, increases,
         rearrangements, and replacements thereof. In addition to the Credit
         Notes, Borrower will deliver to the Agent a new swingline promissory
         note (the "Swingline Note") dated as of November 13, 2000, and payable
         to Agent, which Swingline Note is given to Agent in replacement of the
         swingline promissory note dated as of October 15, 2000, and payable to
         Agent (the 10/2000 Swingline Note"), which 10/2000 Swingline Note was
         given to Agent in replacement of the swingline promissory note dated as
         of August 28, 2000, executed by Borrower and payable to the order of
         Agent (the "Original Swingline Note") as more fully set out in such
         Swingline Note, and not in novation or discharge thereof. The
         definition of the term "Swingline Note" in the Credit Agreement is
         hereby amended to mean the Swingline Note and all renewals, extensions,
         modifications, increases, rearrangements, and replacements thereof.

         Section 3. Representations. Borrower represents and warrants that all
of the representations and warranties contained in the Credit Agreement and all
instruments and documents executed pursuant thereto or contemplated thereby are
true and correct in all material respects on and as of this date.

         Section 4. Continued Force and Effect. Except as specifically amended
herein or heretofor, all of the terms and conditions of the Credit Agreement and
all other Loan Documents are and remain in full force and effect in accordance
with their respective terms. All of the terms used herein have the same meanings
as set out in the Credit Agreement, unless amended hereby or unless the context
clearly requires otherwise. References in the Credit Agreement to the
"Agreement," the "Loan Agreement," "hereof," "herein," and words of similar
import shall be deemed to be references to the Credit Agreement as amended
hereby. Any reference in the other Loan Documents to the "Agreement," the "Line
of Credit Agreement," "Warehouse Agreement," or the "Loan Agreement" shall be
deemed to be references to the Credit Agreement as amended through the date
hereof. Any references in the Credit Agreement or any of the Loan Documents to
the Notes, or the Credit Notes shall be deemed to be references to the Credit
Notes and all renewals, extensions, modifications, increases, rearrangements,
and replacements thereof.

         Section 5. Consent and Ratification by Guarantor. Guarantor joins in
the execution of this Amendment for, among other things, the purpose of
ratifying its Guaranty dated as of August 28, 2000 (the "Guaranty"), which
guarantees the payment of the indebtedness evidenced by the Credit Agreement and
the Credit Notes. GUARANTOR (i) CONSENTS TO THE TERMS OF THIS AMENDMENT AND THE
TRANSACTIONS CONTEMPLATED HEREIN, (ii) RATIFIES AND CONFIRMS THE GUARANTY, WHICH
IS IN FULL FORCE AND EFFECT IN ACCORDANCE WITH ITS TERMS, AND (iii) ACKNOWLEDGES
THAT THE GUARANTY IS NOT SUBJECT TO ANY CLAIMS, OFFSETS, DEFENSES, OR
COUNTERCLAIMS OF ANY NATURE WHATSOEVER.

                                                                          Page 2
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         Section 6. Representations and Release of Claims. Except as otherwise
specified herein, the terms and provisions hereof shall in no manner impair,
limit, restrict or otherwise affect the obligations of Borrower or any third
party to Lender, as evidenced by the Loan Documents. Borrower and Guarantor
hereby acknowledge, agree, and represent that (i) Borrower is indebted to
Lenders pursuant to the terms of the Credit Notes; (ii) the liens, security
interests and assignments created and evidenced by the Loan Documents are,
respectively, first, prior, valid and subsisting liens, security interests and
assignments against the Collateral and secure all indebtedness and obligations
of Borrower to Lenders under the Credit Notes, the Credit Agreement, all other
Loan Documents, as modified herein; (iii) there are no claims or offsets
against, or defenses or counterclaims to, the terms or provisions of the Loan
Documents, and the other obligations created or evidenced by the Loan Documents;
(iv) neither Borrower nor Guarantor has any claims, offsets, defenses or
counterclaims arising from the Agent's or any of the Lenders' acts or omissions
with respect to the Loan Documents, or the Agent's or Lenders' performance under
the Loan Documents; (v) the representations and warranties contained in the Loan
Documents are true and correct representations and warranties of Borrower and
Guarantor, as of the date hereof; (vi) Borrower promises to pay to the order of
Lenders the indebtedness evidenced by the Credit Notes according to the terms
thereof; and (vii) Borrower is not in default and no event has occurred which,
with the passage of time, giving of notice, or both, would constitute a default
by Borrower of Borrower's obligations under the terms and provisions of the Loan
Documents. In consideration of the modification of certain provisions of the
Loan Documents, all as herein provided, and the other benefits received by
Borrower and Guarantor hereunder, Borrower and Guarantor hereby RELEASE,
RELINQUISH and forever DISCHARGE Agent and Lenders, and each of their respective
predecessors, successors, assigns, shareholders, principals, parents,
subsidiaries, agents, officers, directors, employees, attorneys and
representatives (collectively, the "Lender Released Parties"), of and from any
and all claims, demands, actions and causes of action of any and every kind or
character, whether known or unknown, present or future, which Borrower or
Guarantor have, or may have against Lender Released Parties, arising out of or
with respect to any and all transactions relating to the Credit Agreement, the
Original Replacement Notes, the Credit Notes, the Original Swingline Note, the
Swingline Note, the Guaranty, and the other Loan Documents occurring prior to
the date hereof, including any other loss, expense and/or detriment, of any kind
or character, growing out of or in any way connected with or in any way
resulting from the acts, actions or omissions of the Lender Released Parties,
and including any loss, cost or damage in connection with any breach of
fiduciary duty, breach of any duty of fair dealing, breach of competence, breach
of funding commitment, undue influence, duress, economic coercion, conflict of
interest, negligence, bad faith, malpractice, violations of the Racketeer
Influence and Corrupt Organizations Act, intentional or negligent infliction of
emotional or mental distress, tortious interference with corporate governments
or prospective business advantage, tortious interference with contractual
relations, breach of contract, deceptive trade practices, libel, slander,
conspiracy, the charging, contracting for, taking, reserving, collecting or
receiving of interest in excess of the highest lawful rate applicable to the
Loan Documents (i.e., usury), any violations of federal or state law, any
violations of federal or state banking rules, laws or regulations, including,
but not limited to, any violations of Regulation B, Equal Credit Opportunity,
bank tying act claims, any violation of the Texas Free Enterprise Antitrust Act
or any violation of federal antitrust acts.

                                                                          Page 3
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         Section 7. Severability. In the event any one or more provisions
contained in the Credit Agreement, this Amendment, or any of the Loan Documents
should be held to be invalid, illegal or unenforceable in any respect, the
validity, enforceability and legality of the remaining provisions contained
herein and therein shall not be affected in any way or impaired thereby and
shall be enforceable in accordance with their respective terms.

         Section 8. Expenses. Borrower agrees to pay all out-of-pocket costs and
expenses (including reasonable fees and expenses of legal counsel) of Agent in
connection with the preparation, operation, administration and enforcement of
this Amendment.

         Section 9. Ratification of Agreements. Except as amended hereby,
Borrower ratifies and confirms that Credit Agreement, the Credit Notes, and all
other Loan Documents are and remain in full force and effect in accordance with
their respective terms and that all Collateral is unimpaired by this Amendment
and secures the payment and performance of all indebtedness and obligations of
Borrower under the Credit Notes, the Credit Agreement, and all other Loan
Documents, as modified hereby. Each of the undersigned officers of Borrower and
Guarantor executing this Amendment represent and warrant that he has full power
and authority to execute and deliver this Amendment on behalf of Borrower and
Guarantor, respectively, that such execution and delivery has been duly
authorized, and that the resolutions and affidavits previously delivered to
Agent, in connection with the execution and delivery of the Credit Agreement,
are and remain in full force and effect and have not been altered, amended or
repealed in anywise.

         Section 10. No Waiver. Borrower and Guarantor agree that no Event of
Default and no Default has been waived or remedied by the execution of this
Amendment by Agent and Lenders, and any such Default or Event of Default
heretofore arising and currently continuing shall continue after the execution
and delivery hereof.

         Section 11. Governing Law. This Amendment shall be governed by and
construed in accordance with the laws of the State of Texas and, to the extent
applicable, by federal law.

         Section 12. Counterparts. This Amendment may be executed in any number
of counterparts and all of such counterparts taken together shall be deemed to
constitute one and the same instrument.

         SECTION 13. NO ORAL AGREEMENTS. THIS WRITTEN AMENDMENT, THE CREDIT
AGREEMENT, THE CREDIT NOTES, THE GUARANTY, AND THE OTHER LOAN DOCUMENTS, ALL AS
MODIFIED HEREBY, REPRESENT THE FINAL AGREEMENT BETWEEN THE PARTIES AND MAY NOT
BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS OR ORAL AGREEMENTS OF THE
PARTIES.

         THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.

         EXECUTED and effective as of the dates first written above.

BORROWER:                                                   LENDERS
---------                                                   -------

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<TABLE>
<CAPTION>

<S>                                                         <C>
MORTGAGE PORTFOLIO SERVICES,
INC., a Delaware corporation                                BANK UNITED, A FEDERAL SAVINGS BANK

By: /s/ Alan Ferree                                         By: /s/ Patrick C. Freeman

GUARANTOR                                                          Percentage Share:  66.7273%

NAB ASSET CORPORATION, a Texas corporation
                                                            RESIDENTIAL FUNDING
By: /s/ Alan Ferree                                         CORPORATION
      Alan K. Ferree, Senior Vice President

AGENT                                                       By: /s/ Thomas M. Clement

                                                                   Percentage Share:  33.2727%
BANK UNITED, A FEDERAL SAVINGS BANK

By: /s/ Patrick C. Freeman
</TABLE>

                                                                          Page 5<PAGE>   1

                                                                    Exhibit 10.2

                           SMITH MICRO SOFTWARE, INC.
                      1995 STOCK OPTION/STOCK ISSUANCE PLAN
                (AS AMENDED AND RESTATED THROUGH MARCH 31, 2000)

                                   ARTICLE ONE

                                     GENERAL

        I.     PURPOSE OF THE PLAN

               A. This 1995 Stock Option/Stock Issuance Plan (the "Plan") is
intended to promote the interests of Smith Micro Software, Inc., a Delaware
corporation (the "Corporation"), by providing eligible individuals with the
opportunity to acquire a proprietary interest, or otherwise increase their
proprietary interest, in the Corporation as an incentive for them to remain in
the service of the Corporation (or its parent or subsidiary corporations).

               B. The Discretionary Option Grant and Stock Issuance Programs of
the Plan became effective immediately upon the adoption of the Plan by the
Corporation's Board of Directors. Such date is hereby designated the "Plan
Effective Date." The Automatic Option Grant Program, however, became effective
on the date of execution of the underwriting agreement in connection with the
initial public offering of the Common Stock. Such date is hereby designated as
the "Automatic Option Grant Program Effective Date."

        II.    DEFINITIONS

               A. For purposes of the Plan, the following definitions shall be
in effect:

               BOARD: the Corporation's Board of Directors.

               CHANGE IN CONTROL: a change in ownership or control of the
Corporation effected through either of the following transactions:

                    (i) the acquisition directly or indirectly by any person or
          related group of persons (other than the Corporation or a person that
          directly or indirectly controls, is controlled by, or is under common
          control with, the Corporation) of beneficial ownership (within the
          meaning of Rule 13d-3 of the 1934 Act) of securities possessing more
          than fifty percent (50%) of the total combined voting power of the
          Corporation's outstanding securities pursuant to a tender or exchange
          offer made directly to the Corporation's stockholders which the Board
          does not recommend such stockholders to accept; or

                    (ii) a change in the composition of the Board over a period
          of thirty-six (36) consecutive months or less such that a majority of
          the Board members ceases, by reason of one or more contested elections
          for Board membership, to be comprised of individuals who either (A)
          have been Board members continuously since the beginning of such
          period or (B) have been elected or nominated for election as Board
          members during such period by at least

<PAGE>   2

          a majority of the Board members described in clause (A) who were still
          in office at the time such election or nomination was approved by the
          Board.

               CODE: the Internal Revenue Code of 1986, as amended.

               COMMON STOCK: shares of the Corporation's common stock.

               CORPORATE TRANSACTION: any of the following stockholder-approved
transactions to which the Corporation is a party:

                    (i) a merger or consolidation in which securities possessing
          more than fifty percent (50%) of the total combined voting power of
          the Corporation's outstanding securities are transferred to a person
          or persons different from the persons holding those securities
          immediately prior to such transaction, or

                    (ii) the sale, transfer or other disposition of all or
          substantially all of the Corporation's assets in complete liquidation
          or dissolution of the Corporation.

               DISABILITY: the inability of an individual to engage in any
substantial gainful activity by reason of any medically determinable physical or
mental impairment which is expected to result in death or has lasted or can be
expected to last for a continuous period of not less than twelve (12) months.
However, for purposes of the Automatic Option Grant Program, Disability shall
mean the inability of the non-employee Board member to perform his or her usual
duties as a Board member by reason of any medically determinable physical or
mental impairment expected to result in death or to be of continuous duration of
twelve (12) months or more.

               EMPLOYEE: an individual who performs services while in the employ
of the Corporation or one or more parent or subsidiary corporations, subject to
the control and direction of the employer entity not only as to the work to be
performed but also as to the manner and method of performance.

               EXERCISE DATE: the date on which the Corporation shall have
received written notice of the option exercise.

               FAIR MARKET VALUE: the Fair Market Value per share of Common
Stock determined in accordance with the following provisions:

               - If the Common Stock is not at the time listed or admitted to
trading on any national securities exchange but is traded on the Nasdaq National
Market, then the Fair Market Value shall be the closing selling price per share
on the date in question, as such price is reported by the National Association
of Securities Dealers on the Nasdaq National Market. If there is no reported
closing selling price for the Common Stock on the date in question, then the
closing selling price on the last preceding date for which such quotation exists
shall be determinative of Fair Market Value.

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<PAGE>   3

               - If the Common Stock is at the time listed or admitted to
trading on any national securities exchange, then the Fair Market Value shall be
the closing selling price per share on the date in question on the exchange
determined by the Plan Administrator to be the primary market for the Common
Stock, as such price is officially quoted in the composite tape of transactions
on such exchange. If there is no reported sale of Common Stock on such exchange
on the date in question, then the Fair Market Value shall be the closing selling
price on the exchange on the last preceding date for which such quotation
exists.

               - If the Common Stock is on the date in question neither listed
nor admitted to trading on any national securities exchange nor traded on the
Nasdaq National Market, then the Fair Market Value of the Common Stock on such
date shall be determined by the Plan Administrator after taking into account
such factors as the Plan Administrator shall deem appropriate.

               INCENTIVE OPTION: a stock option which satisfies the requirements
of Code Section 422.

               INVOLUNTARY TERMINATION: the termination of the Service of any
individual which occurs by reason of:

                    (i) such individual's involuntary dismissal or discharge by
          the Corporation for reasons other than Misconduct, or

                    (ii) such individual's voluntary resignation following (A) a
          change in his or her position with the Corporation which materially
          reduces his or her level of responsibility, (B) a reduction in his or
          her level of compensation (including base salary, fringe benefits and
          any non-discretionary and objective-standard incentive payment or
          bonus award) by more than fifteen percent (15%) or (C) a relocation of
          such individual's place of employment by more than fifty (50) miles,
          provided and only if such change, reduction or relocation is effected
          by the Corporation without the individual's consent.

               MISCONDUCT: the commission of any act of fraud, embezzlement or
dishonesty by the Optionee or Participant, any unauthorized use or disclosure by
such person of confidential information or trade secrets of the Corporation (or
any parent or subsidiary), or any other intentional misconduct by such person
adversely affecting the business or affairs of the Corporation (or any parent or
subsidiary) in a material manner. The foregoing definition shall not be deemed
to be inclusive of all the acts or omissions which the Corporation (or any
parent or subsidiary) may consider as grounds for the dismissal or discharge of
any Optionee, Participant or other person in the Service of the Corporation (or
any parent or subsidiary).

               1934 ACT: the Securities Exchange Act of 1934, as amended from
time to time.

               NON-STATUTORY OPTION: a stock option not intended to meet the
requirements of Code Section 422.

               OPTIONEE: a person to whom an option is granted under the
Discretionary Option Grant or Automatic Option Grant Program.

                                       3
<PAGE>   4

               PARTICIPANT: a person who is issued Common Stock under the Stock
Issuance Program.

               PLAN ADMINISTRATOR: the particular entity, whether the Primary
Committee, the Board or the Secondary Committee, which is authorized to
administer the Discretionary Option Grant and Stock Issuance Programs with
respect to one or more classes of eligible persons, to the extent such entity is
carrying out its administrative functions under those programs with respect to
the persons under its jurisdiction.

               PRIMARY COMMITTEE: the committee of two (2) or more non-employee
Board members appointed by the Board to administer the Discretionary Option
Grant and Stock Issuance Programs with respect to Section 16 Insiders.

               SECONDARY COMMITTEE: a committee of one (1) or more Board members
appointed by the Board to administer the Discretionary Option Grant and Stock
Issuance Programs with respect to eligible persons other than Section 16
Insiders.

               SECTION 12(g) REGISTRATION DATE: the date on which the initial
registration of the Common Stock under Section 12(g) of the 1934 Act became
effective.

               SECTION 16 INSIDER: an officer or director of the Corporation
subject to the short-swing profit liabilities of Section 16 of the 1934 Act.

               SERVICE: the performance of services on a periodic basis for the
Corporation (or any parent or subsidiary corporation) in the capacity of an
Employee, a non-employee member of the board of directors or an independent
consultant or advisor, except to the extent otherwise specifically provided in
the applicable stock option or stock issuance agreement.

               10% STOCKHOLDER: the owner of stock (as determined under Code
Section 424(d)) possessing more than ten percent (10%) of the total combined
voting power of all classes of stock of the Corporation or any parent or
subsidiary corporation.

               B. The following provisions shall be applicable in determining
the parent and subsidiary corporations of the Corporation:

                    Any corporation (other than the Corporation) in an unbroken
          chain of corporations ending with the Corporation shall be considered
          to be a parent of the Corporation, provided each such corporation in
          the unbroken chain (other than the Corporation) owns, at the time of
          the determination, stock possessing fifty percent (50%) or more of the
          total combined voting power of all classes of stock in one of the
          other corporations in such chain.

                    Each corporation (other than the Corporation) in an unbroken
          chain of corporations beginning with the Corporation shall be
          considered to be a subsidiary of the Corporation, provided each such
          corporation (other than the last corporation) in the unbroken chain
          owns, at the time of the determination, stock possessing fifty percent
          (50%) or more of the total combined voting power of all classes of
          stock in one of the other corporations in such chain.

                                       4
<PAGE>   5

        III.   STRUCTURE OF THE PLAN

               A. Stock Programs. The Plan shall be divided into three (3)
separate components: the Discretionary Option Grant Program specified in Article
Two, the Stock Issuance Program specified in Article Three and the Automatic
Option Grant Program specified in Article Four. Under the Discretionary Option
Grant Program, eligible individuals may, at the discretion of the Plan
Administrator, be granted options to purchase shares of Common Stock in
accordance with the provisions of Article Two. Under the Stock Issuance Program,
eligible individuals may be issued shares of Common Stock directly, either
through the immediate purchase of such shares at a price not less than one
hundred percent (100%) of the Fair Market Value of the shares at the time of
issuance or as a bonus for services rendered the Corporation or the
Corporation's attainment of financial objectives. Under the Automatic Option
Grant Program, each individual serving as a non-employee Board member on the
Automatic Option Grant Program Effective Date and each individual who first
joins the Board as a non-employee director at any time after such Effective Date
shall at periodic intervals receive option grants to purchase shares of Common
Stock in accordance with the provisions of Article Four, with the first such
grants to be made on the Automatic Option Grant Program Effective Date.

               B. General Provisions. Unless the context clearly indicates
otherwise, the provisions of Articles One and Five shall apply to the
Discretionary Option Grant Program, the Automatic Option Grant Program and the
Stock Issuance Program and shall accordingly govern the interests of all
individuals under the Plan.

        IV.    ADMINISTRATION OF THE PLAN

               A. The Board shall have the authority to administer the
Discretionary Option Grant and Stock Issuance Programs with respect to Section
16 Insiders but may delegate such authority in whole or in part to the Primary
Committee.

               B. Members of the Primary Committee shall serve for such period
of time as the Board may determine and may be removed by the Board at any time.
The Board may also at any time terminate the functions of any Secondary
Committee and reassume all powers and authority previously delegated to such
committee.

               C. Each Plan Administrator shall, within the scope of its
administrative functions under the Plan, have full power and authority (subject
to the provisions of the Plan) to establish rules and regulations for the proper
administration of the Discretionary Option Grant and Stock Issuance Programs and
to make such determinations under, and issue such interpretations of, the
provisions of such programs and any outstanding options or stock issuances
thereunder as it may deem necessary or advisable. Decisions of the Plan
Administrator shall be final and binding on all parties who have an interest in
the Discretionary Option Grant and Stock Issuance Programs or any option or
share issuance thereunder.

               D. Service on the Primary Committee or the Secondary Committee
shall constitute service as a Board member, and members of each such committee
shall accordingly be entitled to full indemnification and reimbursement as Board
members for their service on such committee. No member of the Primary Committee
or the Secondary Committee shall be liable

                                       5
<PAGE>   6

for any act or omission made in good faith with respect to the Plan or any
option grants or stock issuances under the Plan.

               E. Administration of the Automatic Option Grant Program shall be
self-executing in accordance with the express terms and conditions of Article
Four, and the Plan Administrator shall exercise no discretionary functions with
respect to option grants made pursuant to that program.

        V.     OPTION GRANTS AND STOCK ISSUANCES

               A. The persons eligible to participate in the Discretionary
Option Grant Program under Article Two and the Stock Issuance Program under
Article Three shall be limited to the following:

                    (i) officers and other key employees of the Corporation (or
          its parent or subsidiary corporations) who render services which
          contribute to the management, growth and financial success of the
          Corporation (or its parent or subsidiary corporations);

                    (ii) non-employee members of the Board; and

                    (iii) those consultants or other independent advisors who
          provide valuable services to the Corporation (or its parent or
          subsidiary corporations).

               B. Only non-employee Board members shall be eligible to receive
automatic option grants pursuant to Article Four.

               C. The Plan Administrator shall have full authority to determine,
(i) with respect to the option grants made under the Discretionary Option Grant
Program, which eligible individuals are to receive option grants, the time or
times when such options are to be granted, the number of shares to be covered by
each such grant, the status of the granted option as either an Incentive Option
or a Non-Statutory Option, the time or times at which each granted option is to
become exercisable and the maximum term for which the option may remain
outstanding and (ii), with respect to stock issuances under the Stock Issuance
Program, the number of shares to be issued to each Participant, the vesting
schedule (if any) to be applicable to the issued shares and the consideration
for which such shares are to be issued.

        VI.    STOCK SUBJECT TO THE PLAN

               A. Shares of Common Stock shall be available for issuance under
the Plan and shall be drawn from either the Corporation's authorized but
unissued shares of Common Stock or from reacquired shares of Common Stock,
including shares repurchased by the Corporation on the open market. The maximum
number of shares of Common Stock which may be issued over the term of the Plan
shall not exceed 2,750,000 shares, subject to adjustment from time to time in
accordance with the provisions of this Section VI.

                                       6
<PAGE>   7

               B. In no event shall the aggregate number of shares of Common
Stock for which any one individual participating in the Plan may be granted
stock options and direct stock issuances exceed 400,000 shares per calendar
year.

               C. Should one or more outstanding options under this Plan expire
or terminate for any reason prior to exercise in full (including any option
cancelled in accordance with the cancellation-regrant provisions of Section IV
of Article Two of the Plan), then the shares subject to the portion of each
option not so exercised shall be available for subsequent option grants under
the Plan. Unvested shares issued under the Plan and subsequently repurchased by
the Corporation pursuant to its repurchase rights under the Plan, shall be added
back to the number of shares of Common Stock available for subsequent issuance
under the Plan. In addition, should the exercise price of an outstanding option
under the Plan be paid with shares of Common Stock or should shares of Common
Stock otherwise issuable under the Plan be withheld by the Corporation in
satisfaction of the withholding taxes incurred in connection with the exercise
of an outstanding option under the Plan or the vesting of a direct share
issuance made under the Plan, then the number of shares of Common Stock
available for issuance under the Plan shall be reduced by the gross number of
shares for which the option is exercised or which vest under the share issuance,
and not by the net number of shares of Common Stock actually issued to the
holder of such option or share issuance.

               D. Should any change be made to the Common Stock issuable under
the Plan by reason of any stock split, stock dividend, recapitalization,
combination of shares, exchange of shares or other change affecting the
outstanding Common Stock as a class without the Corporation's receipt of
consideration, then appropriate adjustments shall be made to (i) the maximum
number and/or class of securities issuable under the Plan, (ii) the maximum
number and/or class of securities for which any one individual participating in
the Plan may be granted stock options and direct stock issuances in the
aggregate per calendar year, (iii) the number and/or class of securities for
which automatic option grants are to be subsequently made per eligible
non-employee Board member under the Automatic Option Grant Program and (iv) the
number and/or class of securities and price per share in effect under each
option outstanding under either the Discretionary Option Grant or Automatic
Option Grant Program. Such adjustments to the outstanding options are to be
effected in a manner which shall preclude the enlargement or dilution of rights
and benefits under such options. The adjustments determined by the Plan
Administrator shall be final, binding and conclusive.

                                       7
<PAGE>   8

                                   ARTICLE TWO

                       DISCRETIONARY OPTION GRANT PROGRAM

        I.     TERMS AND CONDITIONS OF OPTIONS

               Options granted pursuant to the Discretionary Option Grant
Program shall be authorized by action of the Plan Administrator and may, at the
Plan Administrator's discretion, be either Incentive Options or Non-Statutory
Options. Individuals who are not Employees of the Corporation or its parent or
subsidiary corporations may only be granted Non-Statutory Options. Each granted
option shall be evidenced by one or more instruments in the form approved by the
Plan Administrator; provided, however, that each such instrument shall comply
with the terms and conditions specified below. Each instrument evidencing an
Incentive Option shall, in addition, be subject to the applicable provisions of
Section II of this Article Two.

               A. Exercise Price.

                   1. The exercise price per share shall be fixed by the Plan
Administrator in accordance with the following provisions:

                    (i) The exercise price per share of Common Stock subject to
          an Incentive Option shall in no event be less than one hundred percent
          (100%) of the Fair Market Value of such Common Stock on the grant
          date.

                    (ii) The exercise price per share of Common Stock subject to
          a Non-Statutory Option shall in no event be less than eighty-five
          percent (85%) of the Fair Market Value of such Common Stock on the
          grant date.

                   2. The exercise price shall become immediately due upon
exercise of the option and shall, subject to the provisions of Section I of
Article Five, be payable in cash or check made payable to the Corporation.
Should the Corporation's outstanding Common Stock be registered under Section
12(g) of the 1934 Act at the time the option is exercised, then the exercise
price may also be paid as follows:

                    (i) in shares of Common Stock held by the Optionee for the
          requisite period necessary to avoid a charge to the Corporation's
          earnings for financial reporting purposes and valued at Fair Market
          Value on the Exercise Date, or

                    (ii) to the extent the option is exercised for vested
          shares, through a special sale and remittance procedure pursuant to
          which the Optionee shall concurrently provide irrevocable written
          instructions (a) to a Corporation-designated brokerage firm to effect
          the immediate sale of the purchased shares and remit to the
          Corporation, out of the sale proceeds available on the settlement
          date, sufficient funds to cover the aggregate exercise price payable
          for the

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<PAGE>   9

          purchased shares plus all applicable Federal, state and local income
          and employment taxes required to be withheld by the Corporation by
          reason of such purchase and (b) to the Corporation to deliver the
          certificates for the purchased shares directly to such brokerage firm
          in order to complete the sale transaction.

                   3. Except to the extent such sale and remittance procedure is
utilized, payment of the exercise price for the purchased shares must be made on
the Exercise Date.

               B. Term and Exercise of Options. Each option granted under this
Discretionary Option Grant Program shall be exercisable at such time or times
and during such period as is determined by the Plan Administrator and set forth
in the instrument evidencing the grant. No such option, however, shall have a
maximum term in excess of ten (10) years from the grant date.

               During the lifetime of the Optionee, Incentive Options shall be
exercisable only by the Optionee and shall not be assignable or transferable by
the Optionee other than by will or by the laws of descent and distribution
following the Optionee's death. However, a Non-Statutory Option may be assigned
in whole or in part during the Optionee's lifetime to one or more members of the
Optionee's immediate family or to a trust established exclusively for one or
more such family members. The assigned option may only be exercised by the
person or persons who acquire a proprietary interest in the option pursuant to
the assignment. The terms applicable to the assigned option (or portion thereof)
shall be the same as those in effect for the option immediately prior to such
assignment and shall be set forth in such documents issued to the assignee as
the Plan Administrator may deem appropriate.

               C. Termination of Service.

                   1. Except to the extent otherwise provided pursuant to
subsection C.2 below, the following provisions shall govern the exercise period
applicable to any options held by the Optionee at the time of cessation of
Service or death:

                    (i) Should the Optionee cease to remain in Service for any
          reason other than death or Disability, then the period during which
          each outstanding option held by such Optionee is to remain exercisable
          shall be limited to the three (3)-month period following the date of
          such cessation of Service.

                    (ii) Should such Service terminate by reason of Disability,
          then the period during which each outstanding option held by the
          Optionee is to remain exercisable shall be limited to the twelve
          (12)-month period following the date of such cessation of Service.

                    (iii) Should the Optionee die while holding one or more
          outstanding options, then the period during which each such option is
          to remain exercisable shall be limited to the twelve (12)-month period
          following the date of the Optionee's death. During such limited
          period, the option may be exercised by the personal representative of
          the Optionee's estate or by the person or persons to whom the option
          is transferred pursuant to the Optionee's will or in accordance with
          the laws of descent and distribution.

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<PAGE>   10

                    (iv) Should the Optionee's Service be terminated for
          Misconduct, then all outstanding options held by the Optionee shall
          terminate immediately and cease to be outstanding.

                    (v) Under no circumstances, however, shall any such option
          be exercisable after the specified expiration date of the option term.

                    (vi) During the applicable post-Service exercise period, the
          option may not be exercised in the aggregate for more than the number
          of vested shares for which the option is exercisable on the date of
          the Optionee's cessation of Service. Upon the expiration of the
          applicable exercise period or (if earlier) upon the expiration of the
          option term, the option shall terminate and cease to be exercisable
          for any vested shares for which the option has not been exercised.
          However, the option shall, immediately upon the Optionee's cessation
          of Service for any reason, terminate and cease to be outstanding with
          respect to any option shares for which the option is not at that time
          exercisable or in which the Optionee is not otherwise at that time
          vested.

                   2. The Plan Administrator shall have complete discretion,
exercisable either at the time the option is granted or at any time while the
option remains outstanding,

                   - to extend the period of time for which the option is to
remain exercisable following the Optionee's cessation of Service or death from
the limited period in effect under subsection C.1 of this Article Two to such
greater period of time as the Plan Administrator shall deem appropriate;
provided, that in no event shall such option be exercisable after the specified
expiration date of the option term; and/or

                   - to permit one or more options held by the Optionee under
this Article Two to be exercised, during the limited post-Service exercise
period applicable under this paragraph C., not only with respect to the number
of vested shares of Common Stock for which each such option is exercisable at
the time of the Optionee's cessation of Service but also with respect to one or
more subsequent installments in which the Optionee would otherwise have vested
had such cessation of Service not occurred.

               D. Stockholder Rights. An Optionee shall have no stockholder
rights with respect to any shares covered by the option until such individual
shall have exercised the option, paid the exercise price and become the holder
of record of the purchased shares.

               E. Unvested Shares. The Plan Administrator shall have the
discretion to authorize the issuance of unvested shares of Common Stock under
this Discretionary Option Grant Program. Should the Optionee cease Service while
holding such unvested shares, the Corporation shall have the right to
repurchase, at the exercise price paid per share, all or (at the discretion of
the Corporation and with the consent of the Optionee) any of those unvested
shares. The terms and conditions upon which such repurchase right shall be
exercisable (including the period and procedure for exercise and the appropriate
vesting schedule for the purchased shares) shall be established by the Plan
Administrator and set forth in the agreement evidencing such repurchase right.

                                       10
<PAGE>   11

               F. First Refusal Rights. Until such time as the Corporation's
outstanding shares of Common Stock are first registered under Section 12(g) of
the 1934 Act, the Corporation shall have the right of first refusal with respect
to any proposed sale or other disposition by the Optionee (or any successor in
interest by reason of purchase, gift or other transfer) of any shares of Common
Stock issued under this Discretionary Option Grant Program. Such right of first
refusal shall be exercisable in accordance with the terms and conditions
established by the Plan Administrator and set forth in the agreement evidencing
such right.

        II.    INCENTIVE OPTIONS

               Incentive Options may only be granted to individuals who are
Employees, and the terms and conditions specified below shall be applicable to
all Incentive Options granted under the Plan. Except as modified by the
provisions of this Section II, all the provisions of Articles One, Two and Five
shall be applicable to Incentive Options. Any Options specifically designated as
Non-Statutory shall not be subject to such terms and conditions.

               A. Dollar Limitation. The aggregate Fair Market Value (determined
as of the respective date or dates of grant) of the Common Stock for which one
or more options granted to any Employee under this Plan (or any other option
plan of the Corporation or its parent or subsidiary corporations) may for the
first time become exercisable as incentive stock options under the Federal tax
laws during any one calendar year shall not exceed the sum of One Hundred
Thousand Dollars ($100,000). To the extent the Employee holds two (2) or more
such options which become exercisable for the first time in the same calendar
year, the foregoing limitation on the exercisability of such options as
incentive stock options under the Federal tax laws shall be applied on the basis
of the order in which such options are granted. Should the number of shares of
Common Stock for which any Incentive Option first becomes exercisable in any
calendar year exceed the applicable One Hundred Thousand Dollar ($100,000)
limitation, then that option may nevertheless be exercised in that calendar year
for the excess number of shares as a Non-Statutory Option under the Federal tax
laws.

               B. 10% Stockholder. If any individual to whom an Incentive Option
is granted is a 10% Stockholder, then the exercise price per share shall not be
less than one hundred ten percent (110%) of the Fair Market Value per share of
Common Stock on the grant date, and the option term shall not exceed five (5)
years measured from the grant date.

        III.   CORPORATE TRANSACTION/CHANGE IN CONTROL

               A. In the event of any Corporate Transaction, each outstanding
option shall automatically accelerate so that each such option shall,
immediately prior to the effective date of the Corporate Transaction, become
fully exercisable with respect to the total number of shares of Common Stock at
the time subject to such option and may be exercised for any or all of those
shares as fully-vested shares of Common Stock. However, an outstanding option
shall not so accelerate if and to the extent: (i) such option is, in connection
with the Corporate Transaction, either to be assumed by the successor
corporation (or parent thereof) or to be replaced with a comparable option to
purchase shares of the capital stock of the successor corporation (or parent
thereof), (ii) such option is to be replaced with a cash incentive program of
the successor corporation which preserves the spread existing on the unvested
option shares at the time of the

                                       11
<PAGE>   12

Corporate Transaction and provides for subsequent payout in accordance with the
same vesting schedule applicable to such option or (iii) the acceleration of
such option is subject to other limitations imposed by the Plan Administrator at
the time of the option grant. The determination of option comparability under
clause (i) above shall be made by the Plan Administrator, and its determination
shall be final, binding and conclusive.

               B. All outstanding repurchase rights shall also terminate
automatically, and the shares of Common Stock subject to those terminated rights
shall immediately vest in full, in the event of any Corporate Transaction,
except to the extent: (i) those repurchase rights are to be assigned to the
successor corporation (or parent thereof) in connection with such Corporate
Transaction or (ii) such accelerated vesting is precluded by other limitations
imposed by the Plan Administrator at the time the repurchase right is issued.

               C. Immediately following the consummation of the Corporate
Transaction, all outstanding options shall terminate and cease to be
outstanding, except to the extent assumed by the successor corporation (or
parent thereof).

               D. Each option which is assumed in connection with a Corporate
Transaction shall be appropriately adjusted, immediately after such Corporate
Transaction, to apply to the number and class of securities which would have
been issuable to the Optionee in consummation of such Corporate Transaction had
the option been exercised immediately prior to such Corporate Transaction.
Appropriate adjustments to reflect such Corporate Transaction shall also be made
to (i) the exercise price payable per share under each outstanding option,
provided the aggregate exercise price payable for such securities shall remain
the same, (ii) the maximum number and/or class of securities available for
issuance under the remaining term of the Plan and (iii) the maximum number
and/or class of securities for which any one person may be granted stock options
and direct stock issuances under the Plan per calendar year.

               E. The Plan Administrator shall have full power and authority to
grant options under the Discretionary Option Grant Program which will
automatically accelerate in the event the Optionee's Service subsequently
terminates by reason of an Involuntary Termination within a designated period
(not to exceed eighteen (18) months) following the effective date of any
Corporate Transaction in which those options are assumed or replaced and do not
otherwise accelerate. Any options so accelerated shall remain exercisable for
fully-vested shares until the earlier of (i) the expiration of the option term
or (ii) the expiration of the one (1)-year period measured from the effective
date of the Involuntary Termination. In addition, the Plan Administrator may
provide that one or more of the Corporation's outstanding repurchase rights with
respect to shares held by the Optionee at the time of such Involuntary
Termination shall immediately terminate, and the shares subject to those
terminated repurchase rights shall accordingly vest in full.

               F. The Plan Administrator shall have full power and authority to
grant options under the Discretionary Option Grant Program which will
automatically accelerate in the event the Optionee's Service subsequently
terminates by reason of an Involuntary Termination within a designated period
(not to exceed eighteen (18) months) following the effective date of any Change
in Control. Each option so accelerated shall remain exercisable for fully-vested
shares until the earlier of (i) the expiration of the option term or (ii) the
expiration of the one (1)-year

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<PAGE>   13

period measured from the effective date of the Involuntary Termination. In
addition, the Plan Administrator may provide that one or more of the
Corporation's outstanding repurchase rights with respect to shares held by the
Optionee at the time of such Involuntary Termination shall immediately
terminate, and the shares subject to those terminated repurchase rights shall
accordingly vest in full.

               G. The portion of any Incentive Option accelerated in connection
with a Corporate Transaction or Change in Control shall remain exercisable as an
Incentive Option only to the extent the applicable One Hundred Thousand Dollar
limitation is not exceeded. To the extent such dollar limitation is exceeded,
the accelerated portion of such option shall be exercisable as a Non-Statutory
Option under the Federal tax laws.

               H. The outstanding options shall in no way affect the right of
the Corporation to adjust, reclassify, reorganize or otherwise change its
capital or business structure or to merge, consolidate, dissolve, liquidate or
sell or transfer all or any part of its business or assets.

        IV.     CANCELLATION AND REGRANT OF OPTIONS

               The Plan Administrator shall have the authority to effect, at any
time and from time to time, with the consent of the affected Optionees, the
cancellation of any or all outstanding options under this Article Two and to
grant in substitution new options under the Plan covering the same or different
numbers of shares of Common Stock but with an exercise price per share not less
than (i) one hundred percent (100%) of the Fair Market Value per share of Common
Stock on the new grant date in the case of a grant of an Incentive Option, (ii)
one hundred ten percent (110%) of such Fair Market Value in the case of a grant
to a 10% Stockholder or (iii) eighty-five percent (85%) of such Fair Market
Value in the case of all other grants.

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<PAGE>   14

                                  ARTICLE THREE

                             STOCK ISSUANCE PROGRAM

        I.      TERMS AND CONDITIONS OF STOCK ISSUANCES

               Shares of Common Stock may be issued under the Stock Issuance
Program directly without any intervening option grants. Each such stock issuance
shall be evidenced by a Stock Issuance Agreement which complies with the terms
specified below.

               A. The shares shall be issued for such valid consideration under
the Delaware General Corporation Law as the Plan Administrator may deem
appropriate, but the value of such consideration as determined by the Plan
Administrator shall not be less than one hundred percent (100%) of the Fair
Market Value of the issued shares of Common Stock on the issuance date.

               B. The Plan Administrator shall have full power and authority to
issue shares of Common Stock under the Stock Issuance Program as a bonus for
past services rendered to the Corporation (or any parent or subsidiary). All
such bonus shares shall be fully and immediately vested upon issuance.

               C. All other shares of Common Stock authorized for issuance under
the Stock Issuance Program by the Plan Administrator shall have a minimum
vesting schedule determined in accordance with the following requirements:

                      (i) For any shares which are to vest solely by reason of
        Service to be performed by the Participant, the Plan Administrator shall
        impose a minimum Service period of at least two (2) years measured from
        the issue date of such shares.

                      (ii) For any shares which are to vest upon the
        Participant's completion of a designated Service requirement and the
        Corporation's attainment of one or more prescribed performance
        milestones, the Plan Administrator shall impose a minimum Service period
        of at least one (1) year measured from the issue date of such shares.

               D. Any new, substituted or additional securities or other
property (including money paid other than as a regular cash dividend) which the
Participant may have the right to receive with respect to the Participant's
unvested shares of Common Stock by reason of any stock dividend, stock split,
recapitalization, combination of shares, exchange of shares or other change
affecting the outstanding Common Stock as a class without the Corporation's
receipt of consideration shall be issued subject to (i) the same vesting
requirements applicable to the Participant's unvested shares of Common Stock and
(ii) such escrow arrangements as the Plan Administrator shall deem appropriate.

               E. The Participant shall have full stockholder rights with
respect to any shares of Common Stock issued to the Participant under the Stock
Issuance Program, whether or not the

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<PAGE>   15

Participant's interest in those shares is vested. Accordingly, the Participant
shall have the right to vote such shares and to receive any regular cash
dividends paid on such shares.

               F. Should the Participant cease to remain in Service while
holding one or more unvested shares of Common Stock issued under the Stock
Issuance Program or should the performance objectives not be attained with
respect to one or more such unvested shares of Common Stock, then those shares
shall be immediately surrendered to the Corporation for cancellation, and the
Participant shall have no further stockholder rights with respect to those
shares. To the extent the surrendered shares were previously issued to the
Participant for consideration paid in cash or cash equivalent (including the
Participant's purchase-money indebtedness), the Corporation shall repay to the
Participant the cash consideration paid for the surrendered shares and shall
cancel the unpaid principal balance of any outstanding purchase-money note of
the Participant attributable to such surrendered shares.

               G. The Plan Administrator shall have full power and authority,
exercisable upon a Participant's termination of Service, to waive the surrender
and cancellation of any or all unvested shares of Common Stock (or other assets
attributable thereto) at the time held by that Participant, if the Plan
Administrator determines such waiver to be an appropriate severance benefit for
the Participant.

        II.     CORPORATE TRANSACTION/CHANGE IN CONTROL

               A. All of the Corporation's outstanding repurchase/cancellation
rights under the Stock Issuance Program shall terminate automatically, and all
the shares of Common Stock subject to those terminated rights shall immediately
vest in full, in the event of any Corporate Transaction, except to the extent
(i) those rights are assigned to the successor corporation (or parent thereof)
in connection with such Corporate Transaction or (ii) such accelerated vesting
is precluded by other limitations imposed in the Stock Issuance Agreement.

               B. The Plan Administrator shall have the discretionary authority
to structure one or more of the Corporation's repurchase/cancellation rights
under the Stock Issuance Program in such manner that those rights shall
automatically terminate, and all the shares of Common Stock subject to those
terminated rights shall immediately vest in full, in the event the Participant's
Service should subsequently terminate by reason of an Involuntary Termination
within eighteen (18) months following the effective date of any Corporate
Transaction in which those rights are assigned to the successor corporation (or
parent thereof).

               C. The Plan Administrator shall have the discretionary authority
to structure one or more of the Corporation's repurchase/cancellation rights
under the Stock Issuance Program in such manner that those rights shall
automatically terminate, and all the shares of Common Stock subject to those
terminated rights shall immediately vest in full, in the event the Participant's
Service should subsequently terminate by reason of an Involuntary Termination
within eighteen (18) months following the effective date of any Change in
Control.

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<PAGE>   16

        III.    SHARE ESCROW/LEGENDS

               Unvested shares may, in the Plan Administrator's discretion, be
held in escrow by the Corporation until the Participant's interest in such
shares vests or may be issued directly to the Participant with restrictive
legends on the certificates evidencing those unvested shares.

                                       16
<PAGE>   17

                                  ARTICLE FOUR

                         AUTOMATIC OPTION GRANT PROGRAM

        I.      ELIGIBILITY

               The individuals eligible to receive automatic option grants
pursuant to the provisions of this Article Four program shall be limited to
those individuals who are serving as non-employee Board members on the Automatic
Option Grant Program Effective Date or who are first elected or appointed as
non-employee Board members on or after such Effective Date, whether through
appointment by the Board or election by the Corporation's stockholders.

        II.     TERMS AND CONDITIONS OF AUTOMATIC OPTION GRANTS

               A. Grant Dates. Option grants shall be made under this Article
Four on the dates specified below:

                      1. Initial Grant. Each individual serving as a
non-employee Board member on the Automatic Option Grant Program Effective Date
and each individual who is first elected or appointed as a non-employee Board
member after such Effective Date shall automatically be granted, on the
Automatic Option Grant Program Effective Date or on the date of such initial
election or appointment (as the case may be), a Non-Statutory Option to purchase
10,000 shares of Common Stock upon the terms and conditions of this Article
Four. In no event, however, shall a non-employee Board member be eligible to
receive such an initial option grant if such individual has at any time been in
the prior employ of the Corporation (or any parent or subsidiary corporation).

                      2. Annual Grant. On the date of each Annual Stockholders
Meeting, beginning with the first Annual Meeting held after the Section 12(g)
Registration Date, each individual who will continue to serve as a non-employee
Board member shall automatically be granted, whether or not such individual is
standing for re-election as a Board member at that Annual Meeting, a
Non-Statutory Option to purchase an additional 2,500 shares of Common Stock upon
the terms and conditions of this Article Four, provided he or she has served as
a non-employee Board member for at least six (6) months prior to the date of
such Annual Meeting. Non-employee Board members who have previously been in the
employ of the Corporation (or any parent or subsidiary) shall be eligible to
receive such annual option grants over their continued period of Board service
through one or more Annual Stockholders Meetings.

                      3. No Limitation. There shall be no limit on the number of
shares for which any one non-employee Board member may be granted stock options
under this Article Four over his or her period of Board service.

               B. Exercise Price. The exercise price per share of Common Stock
subject to each automatic option grant made under this Article Four shall be
equal to one hundred percent (100%) of the Fair Market Value per share of Common
Stock on the automatic grant date.

                                       17
<PAGE>   18

               C. Payment. The exercise price shall be payable in one of the
alternative forms specified below:

                      (i) full payment in cash or check drawn to the
        Corporation's order;

                      (ii) full payment in shares of Common Stock held for the
        requisite period necessary to avoid a charge to the Corporation's
        earnings for financial reporting purposes and valued at Fair Market
        Value on the Exercise Date (as such term is defined below);

                      (iii) full payment in a combination of shares of Common
        Stock held for the requisite period necessary to avoid a charge to the
        Corporation's earnings for financial reporting purposes and valued at
        Fair Market Value on the Exercise Date and cash or check drawn to the
        Corporation's order; or

                      (iv) to the extent the option is exercised for vested
        shares, full payment through a sale and remittance procedure pursuant to
        which the Optionee shall provide irrevocable written instructions to (I)
        a Corporation-designated brokerage firm to effect the immediate sale of
        the purchased shares and remit to the Corporation, out of the sale
        proceeds available on the settlement date, sufficient funds to cover the
        aggregate exercise price payable for the purchased shares and (II) the
        Corporation to deliver the certificates for the purchased shares
        directly to such brokerage firm in order to complete the sale
        transaction.

               Except to the extent the sale and remittance procedure specified
above is used for the exercise of the option for vested shares, payment of the
exercise price for the purchased shares must accompany the exercise notice.

               D. Option Term. Each automatic grant under this Article Four
shall have a maximum term of ten (10) years measured from the automatic grant
date.

               E. Exercisability/Vesting. Each automatic grant shall be
immediately exercisable for any or all of the option shares. However, any shares
purchased under the option shall be subject to repurchase by the Corporation, at
the exercise price paid per share, upon the Optionee's cessation of Board
service prior to vesting in those shares in accordance with the applicable
schedule below:

                      Initial Grant. Each initial 10,000-share automatic grant
shall vest, and the Corporation's repurchase right shall lapse, in a series of
four (4) equal and successive annual installments over the Optionee's period of
continued service as a Board member, with the first such installment to vest
upon Optionee's completion of one (1) year of Board service measured from the
automatic grant date.

                      Annual Grant. Each additional 2,500-share automatic grant
shall vest, and the Corporation's repurchase right shall lapse, upon the
Optionee's completion of one (1) year of Board service measured from the
automatic grant date.

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<PAGE>   19

               F. Limited Transferability. During the lifetime of the Optionee,
each automatic option grant may be assigned in whole or in part to one or more
members of the Optionee's immediate family or to a trust established exclusively
for one or more such family members. The assigned portion may only be exercised
by the person or persons who acquire a proprietary interest in the option
pursuant to the assignment. The terms applicable to the assigned option (or
portion thereof) shall be the same as those in effect for the option immediately
prior to such assignment and shall be set forth in such documents issued to the
assignee as the Plan Administrator may deem appropriate.

               G. Effect of Termination of Board Membership. The following
provisions shall govern the exercise of any outstanding options held by the
Optionee under this Article Four at the time the Optionee ceases to serve as a
Board member:

                      (i) The Optionee (or, in the event of Optionee's death,
        the personal representative of the Optionee's estate or the person or
        persons to whom the option is transferred pursuant to the Optionee's
        will or in accordance with the laws of descent and distribution) shall
        have a twelve (12)-month period following the date of such cessation of
        Board service in which to exercise each such option. However, each
        option shall, immediately upon the Optionee's cessation of Board
        service, terminate and cease to remain outstanding with respect to any
        option shares in which the Optionee is not vested on the date of such
        cessation of Board service.

                      (ii) During the twelve (12)-month exercise period, the
        option may not be exercised in the aggregate for more than the number of
        vested shares for which the option is exercisable at the time of the
        Optionee's cessation of Board service. However, should the Optionee
        cease to serve as a Board member by reason of death or Permanent
        Disability, then all shares at the time subject to the option shall
        immediately vest so that such option may, during the twelve (12)-month
        exercise period following such cessation of Board service, be exercised
        for all or any portion of such shares as fully-vested shares.

                      (iii) In no event shall the option remain exercisable
        after the expiration of the option term.

               H. Stockholder Rights. The holder of an automatic option grant
under this Article Three shall have none of the rights of a stockholder with
respect to any shares subject to such option until such individual shall have
exercised the option, paid the exercise price and become the holder of record of
the purchased shares.

               I. Remaining Terms. The remaining terms and conditions of each
automatic option grant shall be the same as the terms for option grants made
under the Discretionary Option Grant Program.

        III.    CORPORATE TRANSACTION/CHANGE IN CONTROL

               A. In the event of any Corporate Transaction, the shares of
Common Stock at the time subject to each outstanding option under this Article
Four but not otherwise vested shall

                                       19
<PAGE>   20

automatically vest in full so that each such option shall, immediately prior to
the specified effective date for the Corporate Transaction, become fully
exercisable for all of the shares of Common Stock at the time subject to that
option and may be exercised for all or any portion of those shares as fully
vested shares of Common Stock. Immediately following the consummation of the
Corporate Transaction, all automatic option grants under this Article Four shall
terminate and cease to be outstanding, except to the extent assumed by the
successor corporation or parent thereof.

               B. Each outstanding option under this Article Four which is
assumed in connection with a Corporate Transaction outstanding shall be
appropriately adjusted, immediately after such Corporate Transaction, to apply
and pertain to the number and class of securities which would have been issuable
to the Optionee in the consummation of such Corporate Transaction, had the
option been exercised immediately prior to such Corporate Transaction.
Appropriate adjustments shall also be made to (i) the class and number of
securities available for issuance under the Plan following the consummation of
such Corporate Transaction, and (ii) the exercise price payable per share,
provided the aggregate exercise price payable for such securities shall remain
the same.

               C. In connection with any Change in Control of the Corporation,
the shares of Common Stock at the time subject to each outstanding option under
this Article Four but not otherwise vested shall automatically vest in full so
that each such option shall, immediately prior to the specified effective date
for the Change in Control, become fully exercisable for all of the shares of
Common Stock at the time subject to that option and may be exercised for all or
any portion of those shares as fully vested shares of Common Stock. Each such
option shall remain so exercisable for all the option shares following the
Change in Control, until the expiration or sooner termination of the option
term.

               D. The automatic option grants outstanding under this Article
Four shall in no way affect the right of the Corporation to adjust, reclassify,
reorganize or otherwise change its capital or business structure or to merge,
consolidate, dissolve, liquidate or sell or transfer all or any part of its
business or assets.

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                                  ARTICLE FIVE

                                  MISCELLANEOUS

        I.      LOANS OR INSTALLMENT PAYMENTS

               A. The Plan Administrator may, in its discretion, assist any
Optionee or Participant (including an Optionee or Participant who is an officer
of the Corporation) in the exercise of one or more options granted to such
Optionee under the Discretionary Option Grant Program or the purchase of one or
more shares issued to such Participant under the Stock Issuance Program,
including the satisfaction of any Federal, state and local income and employment
tax obligations arising therefrom, by (i) authorizing the extension of a loan
from the Corporation to such Optionee or Participant or (ii) permitting the
Optionee or Participant to pay the exercise price or purchase price for the
purchased Common Stock in installments over a period of years. The terms of any
loan or installment method of payment (including the interest rate and terms of
repayment) shall be upon such terms as the Plan Administrator specifies in the
applicable option or issuance agreement or otherwise deems appropriate at the
time such exercise price or purchase price becomes due and payable. Loans or
installment payments may be authorized with or without security or collateral.
In all events, the maximum credit available to the Optionee or Participant may
not exceed the option or purchase price of the acquired shares (less the par
value of such shares) plus any Federal, state and local income and employment
tax liability incurred by the Optionee or Participant in connection with the
acquisition of such shares.

               B. The Plan Administrator may, in its absolute discretion,
determine that one or more loans extended under this financial assistance
program shall be subject to forgiveness in whole or in part upon such terms and
conditions as the Plan Administrator may deem appropriate.

        II.     AMENDMENT OF THE PLAN AND AWARDS

               A. The Board has complete and exclusive power and authority to
amend or modify the Plan (or any component thereof) in any or all respects
whatsoever. However, no such amendment or modification shall adversely affect
rights and obligations with respect to options at the time outstanding under the
Plan, nor adversely affect the rights of any Participant with respect to Common
Stock issued under the Stock Issuance Program prior to such action, unless the
Optionee or Participant consents to such amendment. In addition, certain
amendments to the Plan may require stockholder approval pursuant to applicable
laws or regulations.

               B. (i) Options to purchase shares of Common Stock may be granted
under the Discretionary Option Grant Program and (ii) shares of Common Stock may
be issued under the Stock Issuance Program, which are in both instances in
excess of the number of shares then available for issuance under the Plan,
provided any excess shares actually issued under the Discretionary Option Grant
Program or the Stock Issuance Program are held in escrow until stockholder
approval is obtained for a sufficient increase in the number of shares available
for issuance under the Plan. If such stockholder approval is not obtained within
twelve (12) months after the date the first such excess option grants or excess
share issuances are made, then (I) any

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<PAGE>   22

unexercised excess options shall terminate and cease to be exercisable and (II)
the Corporation shall promptly refund the purchase price paid for any excess
shares actually issued under the Plan and held in escrow, together with interest
(at the applicable Short Term Federal Rate) for the period the shares were held
in escrow.

        III.    TAX WITHHOLDING

               A. The Corporation's obligation to deliver shares of Common Stock
upon the exercise of stock options for such shares or the vesting of such shares
under the Plan shall be subject to the satisfaction of all applicable Federal,
state and local income tax and employment tax withholding requirements.

               B. The Plan Administrator may, in its discretion and in
accordance with the provisions of this Section III of this Article Five and such
supplemental rules as the Plan Administrator may from time to time adopt
(including the applicable safe-harbor provisions of Rule 16b-3 of the Securities
and Exchange Commission), provide any or all holders of Non-Statutory Options
(other than the automatic grants made pursuant to Article Four of the Plan) or
unvested shares under the Plan with the right to use shares of Common Stock in
satisfaction of all or part of the Federal, state and local income and
employment tax liabilities incurred by such holders in connection with the
exercise of their options or the vesting of their shares (the "Taxes"). Such
right may be provided to any such holder in either or both of the following
formats:

                      - The holder of the Non-Statutory Option or unvested
shares may be provided with the election to have the Corporation withhold, from
the shares of Common Stock otherwise issuable upon the exercise of such
Non-Statutory Option or the vesting of such shares, a portion of those shares
with an aggregate Fair Market Value equal to the percentage of the applicable
Taxes (not to exceed one hundred percent (100%)) designated by the holder.

                      - The Plan Administrator may, in its discretion, provide
the holder of the Non-Statutory Option or the unvested shares with the election
to deliver to the Corporation, at the time the Non-Statutory Option is exercised
or the shares vest, one or more shares of Common Stock previously acquired by
such individual (other than in connection with the option exercise or share
vesting triggering the Taxes) with an aggregate Fair Market Value equal to the
percentage of the Taxes incurred in connection with such option exercise or
share vesting (not to exceed one hundred percent (100%)) designated by the
holder.

        IV.     EFFECTIVE DATE AND TERM OF PLAN

               A. The Plan was initially adopted by the Board on May 25, 1995,
the Plan Effective Date, and was subsequently approved by the Corporation's
stockholders on July 10, 1995.

               B. On March 27, 1998, the Board amended the Plan to (i) increase
the maximum number of shares of Common Stock authorized for issuance over the
term of the Plan from 1,000,000 to 1,750,000 shares and (ii) render all Board
members eligible to receive option grants under the Discretionary Option Grant
Program and direct stock issuances under the Stock Issuance Program in effect
under the Plan, (iii) allow unvested shares issued under the Plan and

                                       22
<PAGE>   23

subsequently repurchased by the Corporation at the option exercise or direct
issue price paid per share to be reissued under the Plan, (iv) remove certain
restrictions on the eligibility of non-employee Board members to serve as Plan
Administrator and (v) effect a series of additional changes to the provisions of
the Plan (including the stockholder approval requirements) in order to take
advantage of amendments effected in 1996 to Rule 16b-3 of the Securities and
Exchange Commission which exempts certain officer and director transactions
under the Plan from the short-swing liability provisions of the federal
securities laws. The stockholders approved such changes to the Plan at the May
14, 1998 Annual Meeting. The Automatic Option Grant Program of this Plan shall
in no event become effective, and no grants shall be made under such program,
until the Automatic Option Grant Program Effective Date.

               C. On March 31, 2000, the Board amended the Plan to increase the
maximum number of shares of Common Stock authorized for issuance over the term
of the Plan from 1,750,000 to 2,750,000 shares and to increase the limitation on
the number of shares of Common Stock which may be granted to any one individual
as stock options or direct stock issuances from 250,000 to 400,000 shares per
calendar year. The stockholders approved such changes to the Plan at the May __,
2000 Annual Meeting.

               D. The Plan shall terminate upon the earlier of (i) May 24, 2005
or (ii) the date on which all shares available for issuance under the Plan shall
have been issued pursuant to the exercise of the options granted under the Plan
or the issuance of shares (whether vested or unvested) under the Stock Issuance
Program. If the date of termination is determined under clause (i) above, then
all option grants and unvested share issuances outstanding on such date shall
thereafter continue to have force and effect in accordance with the provisions
of the instruments evidencing such grants or issuance.

        V.      REGULATORY APPROVALS

               The implementation of the Plan, the granting of any option under
the Plan, the issuance of any shares under the Stock Issuance Program, and the
issuance of Common Stock upon the exercise of the option grants made hereunder
shall be subject to the Corporation's procurement of all approvals and permits
required by regulatory authorities having jurisdiction over the Plan, the
options granted under it, and the Common Stock issued pursuant to it.

        VI.     USE OF PROCEEDS

               Any cash proceeds received by the Corporation from the sale of
shares pursuant to option grants or share issuances under the Plan shall be used
for general corporate purposes.

        VII.    NO EMPLOYMENT/SERVICE RIGHTS

               Neither the action of the Corporation in establishing the Plan,
nor any action taken by the Plan Administrator hereunder, nor any provision of
the Plan shall be construed so as to grant any individual the right to remain in
the employ or service of the Corporation (or any parent or subsidiary
corporation) for any period of specific duration, and the Corporation (or any
parent or subsidiary corporation retaining the services of such individual) may
terminate such individual's employment or service at any time and for any
reason, with or without cause.

                                       23
<PAGE>   24

        VIII.   MISCELLANEOUS PROVISIONS

               A. Except as otherwise expressly provided under the Plan, the
right to acquire Common Stock or other assets under the Plan may not be
assigned, encumbered or otherwise transferred by any Optionee or Participant.

               B. The provisions of the Plan relating to the exercise of options
and the vesting of shares shall be governed by the laws of the State of
California as such laws are applied to contracts entered into and performed in
such State.

               C. The provisions of the Plan shall inure to the benefit of, and
be binding upon, the Corporation and its successors or assigns, whether by
Corporate Transaction or otherwise, and the Participants and Optionees, the
legal representatives of their respective estates, their respective heirs or
legatees and their permitted assignees.

                                       24

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