Document:

<PAGE>

                                                                    EXHIBIT 4.3

     THE SALE AND ISSUANCE OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE AND
     THE SECURITIES ISSUABLE UPON EXERCISE THEREOF HAVE NOT BEEN REGISTERED
     UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "1933 ACT"), OR UNDER THE
     SECURITIES LAW OF ANY STATE OR OTHER JURISDICTION. THESE SECURITIES HAVE
     BEEN ACQUIRED FOR INVESTMENT AND NOT WITH A VIEW TO, OR IN CONNECTION WITH,
     THE DISTRIBUTION THEREOF. THESE SECURITIES MAY NOT BE OFFERED, SOLD,
     PLEDGED, OR TRANSFERRED UNLESS (I) A REGISTRATION STATEMENT UNDER THE 1933
     ACT IS IN EFFECT AS TO THESE SECURITIES AND SUCH OFFER, SALE, PLEDGE, OR
     TRANSFER IS IN COMPLIANCE WITH APPLICABLE SECURITIES LAW OF ANY STATE OR
     OTHER JURISDICTION OR (II) THERE IS AN OPINION OF COUNSEL OR OTHER
     EVIDENCE, SATISFACTORY TO THE COMPANY, THAT AN EXEMPTION THEREFROM IS
     AVAILABLE AND THAT SUCH OFFER, SALE, PLEDGE, OR TRANSFER IS IN COMPLIANCE
     WITH APPLICABLE SECURITIES LAW OF ANY STATE OR OTHER JURISDICTION.

No.                                                               Shares

                       COMMONWEALTH BIOTECHNOLOGIES, INC.

                   WARRANT TO PURCHASE SHARES OF COMMON STOCK

  This certifies that, for value received, ______________ (the "Holder"), is
entitled, subject to the terms set forth below, to purchase from Commonwealth
Biotechnologies, Inc., a Virginia corporation (the "Company"), subject to the
limitations set forth herein, up to ______ of the authorized but unissued shares
of common stock, without par value per share, of the Company ("Stock") upon
surrender hereof, at the principal office of the Company referred to below,
together with the Notice of Exercise attached hereto duly executed, and
simultaneous payment therefor in lawful money of the United States or otherwise
as hereinafter provided, at the Exercise Price as set forth in Section 2 below.
The number, character and Exercise Price of such shares of Stock are subject to
adjustment as provided below.  The term "Warrant" as used herein shall include
this Warrant, and any warrants delivered in substitution or exchange therefor as
provided herein.

     1.  TERM OF WARRANT.  Subject to the terms and conditions set forth herein,
this Warrant shall be exercisable, in whole or in part, during the term
commencing on
<PAGE>

the date hereof, and ending at 5:00 p.m., Eastern Time, on the date that is five
years following the date hereof.

     2.  EXERCISE PRICE.  The Exercise Price at which this Warrant may be
exercised shall be $6.50 per share of Stock, subject to adjustment pursuant to
Section 12 hereof.

     3.  EXERCISE OF WARRANT.

          3.1  Exercise for Cash. The purchase rights represented by this
Warrant are exercisable by the Holder in whole or in part at any time, or from
time to time, during the term hereof as described in Section 1 above, by the
surrender of this Warrant and the Notice of Exercise attached as Annex I hereto
duly completed and executed on behalf of the Holder, at the principal office of
the Company (or such other office or agency of the Company as it may designate
by notice in writing to the Holder at the address of the Holder appearing on the
books of the Company), upon payment (i) in cash, certified check or bank
cashier's check payable to the Company, or (ii) by wire transfer, of the
purchase price of the shares to be purchased.

          3.2  Net Issue Exercise.  Notwithstanding any provisions herein to the
contrary, if the fair market value of one share of Stock is greater than the
Exercise Price (at the date of calculation as set forth below), in lieu of
exercising this Warrant for cash, the holder may, during the term hereof as
described in Section 1 above, elect to receive shares equal to the value (as
determined below) of this Warrant (or the portion thereof being canceled) by
surrender of this Warrant and the Notice of Exercise attached as Annex I hereto
duly completed and executed on behalf of the Holder, at the principal office of
the Company (or such other office or agency of the Company as it may designate
by notice in writing to the Holder at the address of the Holder appearing on the
books of the Company), in which event the Company shall issue to the Holder a
number of shares of Stock computed using the following formula:

                                               Y (A - B)
                                               ---------
                                 X      =        A

          Where  X  =  the number of shares of Stock to be issued to the
                       Holder

                 Y  =  the number of shares of Stock purchasable under the
                       Warrant or, if only a portion of the Warrant is being
                       exercised, the portion of the Warrant being canceled
                       (at the date of such calculation)

                 A  =  the fair market value of one share of Stock (at the
                       date of such calculation)

                 B  =  Exercise Price (as adjusted to the date of such
                       calculation)

                                       2
<PAGE>

For purposes of the above calculation, Fair Market Value (the "Fair Market
Value") of one share of Stock shall be the average closing price of one share of
Stock on any exchange or inter-dealer quotation system on which the Stock is
then traded for the five trading day period prior to the date o which the
Company receives the Holder's Notice of Exercise.  If the Stock is not then
traded on an exchange or inter-dealer quotation system, the Fair Market Value
shall be determined by the Company's Board of Directors in good faith.  If the
Holder does not agree with the Board's determination of Fair Market Value of the
Stock (the "Board Determination"), the Holder shall have the right within 10
days of his or its receipt of the Board Determination, to cause the Board of
Directors to select an investment banking firm (the "Arbiter") to determine the
Fair Market Value and the Board of Directors shall deliver written notice of
such selection to the Holder and the Company.  The Arbiter shall determine the
Fair Market Value of Stock and deliver its opinion to the Holder and the
Company.  The terms of engagement of the Arbiter shall require the Arbiter to
deliver such written opinion to the Holder and the Company within 45 days
following submission of such value determination to the Arbiter.  The Arbiter's
determination of Fair Market Value shall be binding.  The cost of the Arbiter
shall be borne by the Company if the Arbiter's determination of Fair Market
Value is greater than the Board Determination, and by the Holder if it is equal
to or less than the Board Determination.

     4.  NO FRACTIONAL SHARES OR SCRIP.  No fractional shares or scrip
representing fractional shares shall be issued upon the exercise of this
Warrant.  In lieu of any fractional share to which the Holder would otherwise be
entitled, the Company shall make a cash payment equal to the Exercise Price
multiplied by such fraction.

     5.  REPLACEMENT OF WARRANT.  On receipt of evidence reasonably satisfactory
to the Company of the loss, theft, destruction or mutilation of this Warrant
and, in the case of loss, theft or destruction, on delivery of an indemnity
agreement reasonably satisfactory in form and substance to the Company or, in
the case of mutilation, on surrender and cancellation of this Warrant, the
Company at its expense shall execute and deliver, in lieu of this Warrant, a new
warrant of like tenor and amount.

     6.  RIGHTS OF SHAREHOLDERS.  The Holder shall not be entitled to vote or
receive dividends or be deemed the holder of Stock or any other securities of
the Company that may at any time be issuable on the exercise hereof for any
purpose, nor shall anything contained herein be construed to confer upon the
Holder, as such, any of the rights of a shareholder of the Company or any right
to vote for the election of directors or upon any matter submitted to
shareholders at any meeting thereof, or to give or withhold consent to any
corporate action (whether upon any recapitalization, issuance of stock,
reclassification of stock, change of par value, or change of stock to no par
value, consolidation, merger, conveyance, or otherwise) or to receive notice of
meetings, or to receive dividends or subscription rights or otherwise until this
Warrant shall have been exercised as provided herein.

                                       3
<PAGE>

     7.  TRANSFER OF WARRANT.

          7.1  Warrant Register.  The Company shall maintain a register (the
"Warrant Register") containing the names and addresses of the Holder or Holders.
Any Holder of this Warrant or any portion thereof may change his address as
shown on the Warrant Register by written notice to the Company requesting such
change. Any notice or written communication required or permitted to be given to
the Holder may be delivered or given by mail to such Holder as shown on the
Warrant Register and at the address shown on the Warrant Register.  Until this
Warrant is transferred on the Warrant Register of the Company, the Company may
treat the Holder as shown on the Warrant Register as the absolute owner of this
Warrant for all purposes, notwithstanding any notice to the contrary.

          7.2  Warrant Agent. The Company may, by written notice to the Holder,
appoint an agent for the purpose of maintaining the Warrant Register referred to
in Section 7.1 above, issuing the Stock or other securities then issuable upon
the exercise of this Warrant, exchanging this Warrant, replacing this Warrant or
any or all of the foregoing.  Thereafter, any such registration, issuance,
exchange, or replacement, as the case may be, shall be made at the office of
such agent.

          7.3  Transferability and Nonnegotiability of Warrant.  This Warrant
(and the shares of Stock issuable upon the exercise thereof may not be
transferred or assigned in whole or in part without compliance with all
applicable federal and state securities laws by the transferor and the
transferee (including the delivery of investment representation letters and
legal opinions reasonably satisfactory to the Company, if such are requested by
the Company).

          7.4  Exchange Of Warrant Upon A Transfer. On surrender of this Warrant
for exchange, properly endorsed on the Assignment Form and subject to the
provisions of this Warrant with respect to compliance with the 1933 Act, the
Company at its expense shall issue to or on the order of the Holder a new
warrant or warrants of like tenor, in the name of the Holder or as the Holder
(on payment by the Holder of any applicable transfer taxes) may direct, for the
number of shares issuable upon exercise hereof.

          7.5  Compliance with Securities Laws and Restrictions on Transfer. The
Holder of this Warrant, by acceptance hereof, acknowledges that this Warrant and
the shares of Stock to be issued upon exercise hereof are being acquired solely
for the Holder's own account and not as a nominee for any other party, and for
investment and not with a view to a distribution or resale, and that the Holder
shall not offer, sell or otherwise dispose of this Warrant or any such shares of
Stock except under circumstances that will not result in a violation of the 1933
Act or any state securities laws.  Upon exercise of this Warrant the Holder
shall, if requested by the Company, confirm in writing, in a form satisfactory
to the Company, that the shares of Stock so purchased are being acquired solely
for the Holder's own account and not as a nominee for any other party, for
investment, and not with a view toward distribution or resale.

                                       4
<PAGE>

     8.  RESERVATION OF STOCK.  The Company covenants that during the term that
this Warrant is exercisable, the Company shall reserve from its authorized and
unissued Stock a sufficient number of shares to provide for the issuance of
Stock upon the exercise of this Warrant (collectively, the "Reserved Shares").
The Company further covenants that all Reserved Shares that may be issued upon
the exercise of rights represented by this Warrant and payment of the Exercise
Price, all as set forth herein, will be free from all taxes, liens and charges
in respect of the issue thereof (other than taxes in respect of any transfer
occurring contemporaneously or otherwise specified herein).  The Company agrees
that its issuance of this Warrant shall constitute full authority to its
officers who are charged with the duty of executing stock certificates to
execute and issue the necessary certificates for shares of Stock upon the
exercise of this Warrant.

     9.  RIGHT OF REDEMPTION.  At any time following the issuance of this
Warrant, if the closing price of the Stock on the Nasdaq SmallCap Market (or any
other exchange or inter-dealer quotation system on which the Stock is then
traded) exceeds $10.40 per share for a period of 20 consecutive trading days,
the Company may provide the Holder(s) with written notice of its intent to
redeem this Warrant on a date that is at least 30 days from the notice of intent
to redeem.  On such date, the Company shall redeem this Warrant for an aggregate
redemption price of $_____________.  The Holder(s) from whom this Warrant is
redeemed, on the date of redemption, shall deliver this Warrant to the Company
during regular business hours, at the principal office of the Company.  On such
date, the Company shall issue and deliver to such Holder(s) a check in respect
of the aggregate redemption price for this Warrant.  Notwithstanding the
foregoing, however, the Holder(s), at its sole option, may choose to exercise
this Warrant at any time during the 30 day notice period required to be given by
the Company.

     10.  AMENDMENTS; WAIVERS.  Any term of this Warrant may be amended or
waived with the written consent of the Company and such number of Holders as
represent not less than fifty-one percent (51%) of the shares of Stock issuable
upon exercise of this Warrant.  Any amendments or waivers effected in accordance
with this Section 10 shall be binding upon each Holder, each future Holder, and
the Company; provided, however, that no special consideration or inducement may
be given to any Holder in connection with such consent that is not given ratably
to all Holders, and that such amendment or waiver must apply to all Holders
equally and ratably in accordance with the number of shares of Stock issuable
upon their respective exercises of portions of this Warrant.  No waivers of, or
exceptions to, any term, condition or provision of this Warrant, in any one or
more instances, shall be deemed to be, or construed as, a further or continuing
waiver of any such term, condition or provision. Except as provided in Section
12 hereof, no amendment or waiver shall (i) impose on the Warrantholder any
burden, constraint or restriction not otherwise existing at the time the Warrant
is issued, (ii) increase the exercise price of the Warrant, (iii) decrease the
exercise period, (iv) decrease the number of shares of Stock the Warrantholder
is eligible to receive upon exercise, or (v) materially change the terms of the
Warrant, without the consent of the Warrantholder.

                                       5
<PAGE>

     11.  GENERAL.

          11.1  Governing Law.  This Warrant shall be governed by and construed
according to the laws of the Commonwealth of Virginia, without reference to the
choice of law principles of any jurisdiction.

          11.2  Delays or Omissions. No delay or omission to exercise any right,
power, or remedy accruing to either party upon any breach or default under this
Warrant, shall be deemed a waiver of any other breach or default theretofore or
thereafter occurring.  Any waiver, permit, consent, or approval of any kind or
character on the part of either party of any breach or default under this
Warrant, or any waiver on the part of either party of any provisions or
conditions of this Warrant, must be in writing and shall be effective only to
the extent specifically set forth in such writing.  All remedies, either under
this Warrant or by law or otherwise afforded to either of the parties, shall be
cumulative and not alternative.

          11.3  References. Unless the context otherwise requires, any reference
to a "Section" refers to a section of this Warrant.

          11.4  Captions.  Captions of sections have been added only for
convenience and shall not be deemed to be a part of this Warrant.

     12. ADJUSTMENTS.  The number of shares purchasable hereunder is subject to
adjustment from time to time as follows:

          12.1  Split-Ups, Split-Downs, Stock Dividends.  If the Company should
at any time or from time to time engage in a stock split, stock split-down or
stock dividend with respect to the Stock, the number of shares of Stock issuable
pursuant to this Warrant and the Exercise Price shall be rateably and equitably
adjusted, as determined by the Company's Board of Directors in its reasonable
discretion, provided that any adjustment shall be no less favorable than any
adjustment under the Company's Stock Incentive Plan.

          12.2  Reorganization, Merger or Sale of Assets. If at any time while
this Warrant, or any portion thereof, is outstanding and unexpired there shall
be (i) a reorganization (other than a combination, reclassification, exchange or
subdivision of shares otherwise provided for herein), (ii) a merger or
consolidation of the Company with or into another corporation in which the
Company is not the surviving entity, or a reverse triangular merger in which the
Company is the surviving entity but the shares of the Company's capital stock
outstanding immediately prior to the merger are converted by virtue of the
merger into other property, whether in the form of securities, cash or
otherwise, or (iii) a sale or transfer of the Company's properties and assets
as, or substantially as, an entirety to any other person, then, as a part of

                                       6
<PAGE>

such reorganization, merger, consolidation, sale or transfer, lawful provision
shall be made so that the Holder(s) shall thereafter be entitled to receive upon
payment of the Exercise Price then in effect, the number of shares of stock or
other securities or property of the successor corporation resulting from such
reorganization, merger, consolidation, sale or transfer that a holder of the
shares deliverable upon exercise of this Warrant would have been entitled to
receive in such reorganization, consolidation, merger, sale of transfer if this
Warrant had been exercised immediately before such reorganization, merger,
consolidation, sale or transfer, all subject to further apply to successive
reorganizations, consolidations, mergers, sales and transfers and to the stock
or securities of any other corporation that are at the time receivable upon the
exercise of this Warrant.  If the per-share consideration payable to the Holder
hereof for shares in connection with any such transaction is in a form other
than cash or marketable securities, then the value of such consideration shall
be determined in good faith by the Company's Board of Directors.  In all events,
appropriate adjustment (as determined in good faith by the Company's Board of
Directors) shall be made in the application of the provisions of this Warrant
with respect to the rights and interests of the Holder after the transaction, to
the end that the provisions of this Warrant shall be applicable after that
event, as near as reasonably may be, in relation to any shares or other property
deliverable after that event upon exercise of this Warrant.

          12.3  Reclassification. If the Company, at any time while this
Warrant, or any portion thereof, remains outstanding and unexpired, by
reclassification of securities or otherwise, shall change any of the securities
as to which purchase rights under this Warrant exist into the same or a
different number of securities of any other class or classes, this Warrant shall
thereafter represent the right to acquire such number and kind of securities as
would have been issuable as the result of such change with respect to the
securities that were subject to the purchase rights under this Warrant
immediately prior to such reclassification or other change and the Exercise
Price therefor shall be appropriately adjusted, all subject to further
adjustment as provided in this Section 12.

          12.4  No Impairment.  The Company will not, by any voluntary action,
avoid or seek to avoid the observance or performance of any of the terms to be
observed or performed hereunder by the Company, but will at all times in good
faith assist in the carrying out of all the provisions of this Section 12 and
in the taking of all such action as may be necessary or appropriate in order to
protect the rights of the Holders of this Warrant against impairment.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

                                       7
<PAGE>

  IN WITNESS WHEREOF, COMMONWEALTH BIOTECHNOLOGIES, INC. has caused this Warrant
to be executed by its officer thereunto duly authorized.

Effective Date:  September 25, 2000

COMMONWEALTH BIOTECHNOLOGIES, INC

By:    /s/ Richard J. Freer, Ph.D.
       ---------------------------
Its:   Chairman
Date:  September 25, 2000

HOLDER

______________________________________

By: __________________________________
Its: _________________________________
Date: ________________________________

                                       8
<PAGE>

                                                                         ANNEX I
                                                                         -------

                               NOTICE OF EXERCISE

To:  COMMONWEALTH BIOTECHNOLOGIES, INC.

     (1) The  undersigned  hereby  irrevocably  elects to  purchase  ___________
shares of Common Stock  ("Stock") of  COMMONWEALTH  BIOTECHNOLOGIES,  INC.  (the
"Company"),  pursuant to the terms of the attached Warrant, and tenders herewith
payment of the purchase price for such shares in the following form:

     [ ] By cash, certified check, or bank cashier's check, enclosed, or by wire
transfer for $_______________ for the full Exercise Price, payable to
___________, Inc.

     [ ] By requesting that the Company withhold from the Stock the undersigned
is purchasing an amount sufficient to effect a Net Issue Exercise in accordance
with Section 3.2 of the Warrant.

     (2) In  exercising  this  Warrant,  the  undersigned  hereby  confirms  and
acknowledges  (i) that the shares of the Stock to be issued  are being  acquired
solely for the  account of the  undersigned  and not as a nominee  for any other
party,  and for investment and not with a view to a distribution or resale;  and
(ii) that the undersigned shall not offer, sell or otherwise dispose of any such
shares of Stock except under  circumstances  that will not result in a violation
of the Securities Act of 1933, as amended, or any state securities laws.

     (3) Please issue a certificate or certificates  representing said shares of
Stock of the Company.

Effective Date: _____________________________________

Holder: _____________________________________________

Print Name: _________________________________________

Date: _______________________________________________

                                       9

<PAGE>

                                                                       ANNEX II
                                                                       --------

                                 ASSIGNMENT FORM

  FOR VALUE RECEIVED, the undersigned registered owner of this Warrant hereby
sells, assignees and transfers unto the Assignee named below all of the rights
of the undersigned under the within Warrant, with respect to the number of
shares of Stock set forth below:

Name of Assignee                Address                       No. of Shares
----------------                -------                       -------------

and does hereby irrevocably constitute and appoint the Secretary of Commonwealth
Biotechnologies, Inc. (the "Company") or his successor or agent to make such
transfer on the books of the Company maintained for such purpose, with full
power of substitution in the premises.

  The undersigned Assignee of this Warrant with respect to the number of shares
of Stock set forth above acknowledges (i) that this Warrant and the shares of
Stock issuable upon exercise here are being acquired for investment and that the
Assignee shall not offer, sell or otherwise dispose of this Warrant or any such
shares of Stock except under circumstances which will not result in a violation
of the Securities Act of 1933, as amended, or any state securities laws; and
(ii) that upon exercise of this Warrant, the Assignee shall, if requested by the
Company, confirm in writing, in a form satisfactory to the Company, that the
shares of Stock so purchased are being acquired for investment and not with a
view toward distribution or resale.

Effective Date: ___________________________________

Holder: ___________________________        Assignee: __________________________

By: _______________________________            By: ____________________________

Name: _____________________________          Name: ____________________________

Title: ____________________________         Title: ____________________________

Date: _____________________________          Date: ____________________________

                                     10<PAGE>

                                                                    Exhibit 10.3

                                 PEOPLEPC INC.

                             AMENDED AND RESTATED

                       2000 EMPLOYEE STOCK PURCHASE PLAN

The following constitute the provisions of the 2000 Employee Stock Purchase Plan
of PeoplePC, Inc.

     1.  Purpose. The purpose of the Plan is to provide employees of the Company
         -------
and its Designated Subsidiaries with an opportunity to purchase Common Stock of
the Company through accumulated payroll deductions. It is the intention of the
Company to have the Plan qualify as an "Employee Stock Purchase Plan" under
Section 423 of the Internal Revenue Code of 1986, as amended. The provisions of
the Plan, accordingly, shall be construed so as to extend and limit
participation in a manner consistent with the requirements of that section of
the Code.

     2.  Definitions.
         -----------

          (a)  "Board" shall mean the Board of Directors of the Company or any
                -----
committee thereof designated by the Board of Directors of the Company in
accordance with Section 14 of the Plan.

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

          (c)  "Common Stock" shall mean the common stock of the Company.
                ------------

          (d)  "Company" shall mean PeoplePC Inc. and any Designated Subsidiary
                -------
of the Company.

          (e)  "Compensation" shall mean all base straight time gross earnings,
                ------------
commissions and bonuses, but exclusive of payments for overtime, shift premium,
incentive compensation and other compensation.

          (f)  "Designated Subsidiary" shall mean any Subsidiary that has been
                ---------------------
designated by the Board from time to time in its sole discretion as eligible to
participate in the Plan.

          (g)  "Employee" shall mean any individual who is an Employee of the
                --------
Company for tax purposes whose customary employment with the Company is at least
twenty (20) hours per week and more than five (5) months in any calendar year.
For purposes of the Plan, the employment relationship shall be treated as
continuing intact while the individual is on sick leave or other leave of
absence approved by the Company. Where the period of leave exceeds 90 days and
the individual's right to reemployment is not guaranteed either by statute or by
contract, the employment relationship shall be deemed to have terminated on the
91st day of such leave.
<PAGE>

          (h)  "Enrollment Date" shall mean the first Trading Day of each
                ---------------
Offering Period.

          (i)  "Exercise Date" shall mean the last Trading Day of each Purchase
                -------------
Period.

          (j)  "Fair Market Value" shall mean, 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 Nasdaq
National Market or The Nasdaq SmallCap Market of The Nasdaq Stock Market, 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 date of determination, as reported in
The Wall Street Journal or such other source as the Board deems reliable;

                    (ii)  If the Common Stock is regularly quoted by a
recognized securities dealer but selling prices are not reported, its Fair
Market Value shall be the mean of the closing bid and asked prices for the
Common Stock prior to the date of determination, as reported in The Wall Street
Journal or such other source as the Board deems reliable;

                    (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
Board.

          (k)  "Offering Periods" shall mean the periods of approximately
                ----------------
twenty-four (24) months during which an option granted pursuant to the Plan may
be exercised, commencing on the first Trading Day on or after November 1 and May
1 of each year and terminating on the last Trading Day in the periods ending
twenty-four months later; provided, however, that the first Offering Period
under the Plan shall commence on the first Trading Day on or after October 1,
2000 and end on October 31, 2002. The duration and timing of Offering Periods
may be changed pursuant to Section 4 of this Plan.

          (l)  "Plan" shall mean this 2000 Employee Stock Purchase Plan.
                ----

          (m)  "Purchase Period" shall mean the approximately six month period
                ---------------
commencing after one Exercise Date and ending with the next Exercise Date,
except that the first Purchase Period of any Offering Period shall commence on
the Enrollment Date and end with the next Exercise Date; provided, however that
the initial Purchase Period under the Plan shall be seven months.

          (n)  "Purchase Price" shall mean 85% of the Fair Market Value of a
                --------------
share of Common Stock on the Enrollment Date or on the Exercise Date, whichever
is lower; provided however, that the Purchase Price may be adjusted by the Board
pursuant to Section 20.
<PAGE>

          (o)  "Reserves" shall mean the number of shares of Common Stock
                --------
covered by each option under the Plan which have not yet been exercised and the
number of shares of Common Stock which have been authorized for issuance under
the Plan but not yet placed under option.

          (p)  "Subsidiary" shall mean a corporation, domestic or foreign, of
                ----------
which not less than 50% of the voting shares are held by the Company or a
Subsidiary, whether or not such corporation now exists or is hereafter organized
or acquired by the Company or a Subsidiary.

          (q)  "Trading Day" shall mean a day on which national stock exchanges
                ----------
               and the System are open for trading.

     3.  Eligibility.
         -----------
          (a)  Any Employee who shall be employed by the Company on a given
Enrollment Date shall be eligible to participate in the Plan.

          (b)  Any provisions of the Plan to the contrary notwithstanding, no
Employee shall be granted an option under the Plan (i) to the extent that,
immediately after the grant, such Employee (or any other person whose stock
would be attributed to such Employee pursuant to Section 424(d) of the Code)
would own capital stock of the Company and/or hold outstanding options to
purchase such stock possessing five percent (5%) or more of the total combined
voting power or value of all classes of the capital stock of the Company or of
any Subsidiary, or (ii) to the extent that his or her rights to purchase stock
under all employee stock purchase plans of the Company and its subsidiaries
accrues at a rate which exceeds twenty-five Thousand Dollars ($25,000) worth of
stock (determined at the fair market value of the shares at the time such option
is granted) for each calendar year in which such option is outstanding at any
time.

     4.  Offering Periods. The Plan shall be implemented by consecutive,
         ----------------
overlapping Offering Periods with a new Offering Period commencing on the first
Trading Day on or after November 1 and May 1 of each year, or on such other date
as the Board shall determine, and continuing thereafter until terminated in
accordance with Section 20 hereof; provided, however, that the first Offering
Period under the Plan shall commence on October 1, 2000. The Board shall have
the power to change the duration of Offering Periods (including the commencement
dates thereof) with respect to future offerings without shareholder approval if
such change is announced at least five (5) days prior to the scheduled beginning
of the first Offering Period to be affected thereafter.

     5.  Participation.
         -------------
          (a)  An eligible Employee may become a participant in the Plan by
completing a subscription agreement authorizing payroll deductions in the form
of Exhibit A to this Plan and filing it with the Company's payroll office prior
to the applicable Enrollment Date.
<PAGE>

          (b)  Payroll deductions for a participant shall commence on the first
payroll following the Enrollment Date and shall end on the last payroll in the
Offering Period to which such authorization is applicable, unless sooner
terminated by the participant as provided in Section 10 hereof.

     6.  Payroll Deductions.
         ------------------
          (a)  At the time a participant files his or her subscription
agreement, he or she shall elect to have payroll deductions made on each pay day
during the Offering Period in an amount not exceeding (15 %) of the Compensation
which he or she receives on each pay day during the Offering Period.

          (b)  All payroll deductions made for a participant shall be credited
to his or her account under the Plan and shall be withheld in whole percentages
only. A participant may not make any additional payments into such account.

          (c)  A participant may discontinue his or her participation in the
Plan as provided in Section 10 hereof, or may increase or decrease the rate of
his or her payroll deductions during the Offering Period by completing or filing
with the Company a new subscription agreement authorizing a change in payroll
deduction rate. The Board may, in its discretion, limit the number of
participation rate changes during any Offering Period. The change in rate shall
be effective with the first full payroll period following five (5) business days
after the Company's receipt of the new subscription agreement unless the Company
elects to process a given change in participation more quickly. A participant's
subscription agreement shall remain in effect for successive Offering Periods
unless terminated as provided in Section 10 hereof.

          (d)  Notwithstanding the foregoing, to the extent necessary to comply
with Section 423(b)(8) of the Code and Section 3(b) hereof, a participant's
payroll deductions may be decreased to zero percent (0%) at any time during a
Purchase Period. Payroll deductions shall recommence at the rate provided in
such participant's subscription agreement at the beginning of the first Purchase
Period which is scheduled to end in the following calendar year, unless
terminated by the participant as provided in Section 10 hereof .

          (e)  At the time the option is exercised, in whole or in part, or at
the time some or all of the Company's Common Stock issued under the Plan is
disposed of, the participant must make adequate provision for the Company's
federal, state, or other tax withholding obligations, if any, which arise upon
the exercise of the option or the disposition of the Common Stock. At any time,
the Company may, but shall not be obligated to, withhold from the participant's
compensation the amount necessary for the Company to meet applicable withholding
obligations, including any withholding required to make available to the Company
any tax deductions or benefits attributable to sale or early disposition of
Common Stock by the Employee.

     7.  Grant of Option. On the Enrollment Date of each Offering Period, each
         ---------------
eligible Employee participating in such Offering Period shall be granted an
option to
<PAGE>

purchase on each Exercise Date during such Offering Period (at the applicable
Purchase Price) up to a number of shares of the Company's Common Stock
determined by dividing such Employee's payroll deductions accumulated prior to
such Exercise Date and retained in the Participant's account as of the Exercise
Date by the applicable Purchase Price; provided that in no event shall an
Employee be permitted to purchase during each Purchase Period more than 40,000
shares of the Company's Common Stock (subject to any adjustment pursuant to
Section 19), and provided further that such purchase shall be subject to the
limitations set forth in Sections 3(b) and 12 hereof. The Board may, for future
Offering Periods, increase or decrease, in its absolute discretion, the maximum
number of shares of the Company's Common Stock an Employee may purchase during
each Purchase Period of such Offering Period. Exercise of the option shall occur
as provided in Section 8 hereof, unless the participant has withdrawn pursuant
to Section 10 hereof. The option shall expire on the last day of the Offering
Period.

     8.  Exercise of Option.
         ------------------

               (a)  Unless a participant withdraws from the Plan as provided in
Section 10 hereof, his or her option for the purchase of shares shall be
exercised automatically on the Exercise Date, and the maximum number of full
shares subject to option shall be purchased for such participant at the
applicable Purchase Price with the accumulated payroll deductions in his or her
account. No fractional shares shall be purchased; any payroll deductions
accumulated in a participant's account which are not sufficient to purchase a
full share shall be retained in the participant's account for the subsequent
Purchase Period or Offering Period, subject to earlier withdrawal by the
participant as provided in Section 10 hereof. Any other monies left over in a
participant's account after the Exercise Date shall be returned to the
participant. During a participant's lifetime, a participant's option to purchase
shares hereunder is exercisable only by him or her.

          (b)  If the Board determines that, on a given Exercise Date, the
number of shares with respect to which options are to be exercised may exceed
(i) the number of shares of Common Stock that were available for sale under the
Plan on the Enrollment Date of the applicable Offering Period, or (ii) the
number of shares available for sale under the Plan on such Exercise Date, the
Board may in its sole discretion (x) provide that the Company shall make a pro
rata allocation of the shares of Common Stock available for purchase on such
Enrollment Date or Exercise Date, as applicable, in as uniform a manner as shall
be practicable and as it shall determine in its sole discretion to be equitable
among all participants exercising options to purchase Common Stock on such
Exercise Date, and continue all Offering Periods then in effect, or (y) provide
that the Company shall make a pro rata allocation of the shares available for
purchase on such Enrollment Date or Exercise Date, as applicable, in as uniform
a manner as shall be practicable and as it shall determine in its sole
discretion to be equitable among all participants exercising options to purchase
Common Stock on such Exercise Date, and terminate any or all Offering Periods
then in effect pursuant to Section 20 hereof. The Company may make pro rata
allocation of the shares available on the Enrollment Date of any applicable
Offering Period pursuant to the preceding sentence, notwithstanding any
authorization of additional shares for issuance under the Plan by the Company's
shareholders subsequent to such Enrollment Date.
<PAGE>

     9.  Delivery. As promptly as practicable after each Exercise Date on which
         --------
a purchase of shares occurs, the Company shall arrange the delivery to each
participant, as appropriate, of a certificate representing the shares purchased
upon exercise of his or her option.

     10. Withdrawal.
         ----------
          (a)  A participant may withdraw all but not less than all the payroll
deductions credited to his or her account and not yet used to exercise his or
her option under the Plan at any time by giving written notice to the Company in
the form of Exhibit B to this Plan. All of the participant's payroll deductions
credited to his or her account shall be paid to such participant promptly after
receipt of notice of withdrawal and such participant's option for the Offering
Period shall be automatically terminated, and no further payroll deductions for
the purchase of shares shall be made for such Offering Period. If a participant
withdraws from an Offering Period, payroll deductions shall not resume at the
beginning of the succeeding Offering Period unless the participant delivers to
the Company a new subscription agreement.

          (b)  A participant's withdrawal from an Offering Period shall not have
any effect upon his or her eligibility to participate in any similar plan which
may hereafter be adopted by the Company or in succeeding Offering Periods which
commence after the termination of the Offering Period from which the participant
withdraws.

     11.  Termination of Employment.
          -------------------------

               Upon a participant's ceasing to be an Employee, for any reason,
he or she shall be deemed to have elected to withdraw from the Plan and the
payroll deductions credited to such participant's account during the Offering
Period but not yet used to exercise the option shall be returned to such
participant or, in the case of his or her death, to the person or persons
entitled thereto under Section 15 hereof, and such participant's option shall be
automatically terminated. The preceding sentence notwithstanding, a participant
who receives payment in lieu of notice of termination of employment shall be
treated as continuing to be an Employee for the participant's customary number
of hours per week of employment during the period in which the participant is
subject to such payment in lieu of notice.

     12. Interest. No interest shall accrue on the payroll deductions of a
         --------
participant in the Plan.

     13. Stock.
         -----

          (a)  Subject to adjustment upon changes in capitalization of the
Company as provided in Section 19 hereof, the maximum number of shares of the
Company's Common Stock which shall be made available for sale under the Plan
shall be 6,600,000 shares plus an annual increase to be added on the first day
of the Company's fiscal year beginning in 2001, equal to the lesser of (i)
6,600,000 shares, (ii) 3% of the outstanding shares on such date or (iii) a
lesser amount determined by the Board.
<PAGE>

          (b)  The participant shall have no interest or voting right in shares
covered by his option until such option has been exercised.

          (c)  Shares to be delivered to a participant under the Plan shall be
registered in the name of the participant or in the name of the participant and
his or her spouse.

     14.  Administration. The Plan shall be administered by the Board or a
          --------------
committee of members of the Board appointed by the Board. The Board or its
committee shall have full and exclusive discretionary authority to construe,
interpret and apply the terms of the Plan, to determine eligibility and to
adjudicate all disputed claims filed under the Plan. Every finding, decision and
determination made by the Board or its committee shall, to the full extent
permitted by law, be final and binding upon all parties.

     15.  Designation of Beneficiary.
          --------------------------

          (a)  A participant may file a written designation of a beneficiary who
is to receive any shares and cash, if any, from the participant's account under
the Plan in the event of such participant's death subsequent to an Exercise Date
on which the option is exercised but prior to delivery to such participant of
such shares and cash. In addition, a participant may file a written designation
of a beneficiary who is to receive any cash from the participant's account under
the Plan in the event of such participant's death prior to exercise of the
option. If a participant is married and the designated beneficiary is not the
spouse, spousal consent shall be required for such designation to be effective.

          (b)  Such designation of beneficiary may be changed by the participant
at any time by written notice. In the event of the death of a participant and in
the absence of a beneficiary validly designated under the Plan who is living at
the time of such participant's death, the Company shall deliver such shares
and/or cash to the executor or administrator of the estate of the participant,
or if no such executor or administrator has been appointed (to the knowledge of
the Company), the Company, in its discretion, may deliver such shares and/or
cash to the spouse or to any one or more dependents or relatives of the
participant, or if no spouse, dependent or relative is known to the Company,
then to such other person as the Company may designate.

     16.  Transferability. Neither payroll deductions credited to a
          ---------------
participant's account nor any rights with regard to the exercise of an option or
to receive shares under the Plan may be assigned, transferred, pledged or
otherwise disposed of in any way (other than by will, the laws of descent and
distribution or as provided in Section 15 hereof) by the participant. Any such
attempt at assignment, transfer, pledge or other disposition shall be without
effect, except that the Company may treat such act as an election to withdraw
funds from an Offering Period in accordance with Section 10 hereof.

     17.  Use of Funds. All payroll deductions received or held by the Company
          ------------
under the Plan may be used by the Company for any corporate purpose, and the
Company shall not be obligated to segregate such payroll deductions.
<PAGE>

     18.  Reports. Individual accounts shall be maintained for each participant
          -------
in the Plan. Statements of account shall be given to participating Employees at
least annually, which statements shall set forth the amounts of payroll
deductions, the Purchase Price, the number of shares purchased and the remaining
cash balance, if any.

     19.  Adjustments Upon Changes in Capitalization, Dissolution, Liquidation,
          ---------------------------------------------------------------------
Merger or Asset Sale.
--------------------

          (a)  Changes in Capitalization. Subject to any required action by the
               -------------------------
shareholders of the Company, the Reserves, the maximum number of shares each
participant may purchase each Purchase Period (pursuant to Section 7), as well
as the price per share and the number of shares of Common Stock covered by each
option under the Plan which has not yet been exercised 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 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.

          (b)  Dissolution or Liquidation. In the event of the proposed
               --------------------------
dissolution or liquidation of the Company, the Offering Period then in progress
shall be shortened by setting a new Exercise Date (the "New Exercise Date"), and
shall terminate immediately prior to the consummation of such proposed
dissolution or liquidation, unless provided otherwise by the Board. The New
Exercise Date shall be before the date of the Company's proposed dissolution or
liquidation. The Board shall notify each participant in writing, at least ten
(10) business days prior to the New Exercise Date, that the Exercise Date for
the participant's option has been changed to the New Exercise Date and that the
participant's option shall be exercised automatically on the New Exercise Date,
unless prior to such date the participant has withdrawn from the Offering Period
as provided in Section 10 hereof.

          (c)  Merger or Asset Sale. In the event of a proposed sale of all or
               --------------------
substantially all of the assets of the Company, or the merger of the Company
with or into another corporation, each outstanding option shall be assumed or an
equivalent option substituted by the successor corporation or a Parent or
Subsidiary of the successor corporation. In the event that the successor
corporation refuses to assume or substitute for the option, any Purchase Periods
then in progress shall be shortened by setting a new Exercise Date (the "New
Exercise Date") and any Offering Periods then in progress shall end on the New
Exercise Date. The New Exercise Date shall be before the date of the Company's
proposed sale or merger. The Board shall notify each participant in writing, at
least ten (10) business days prior to the New Exercise Date, that the Exercise
Date for
<PAGE>

the participant's option has been changed to the New Exercise Date and that the
participant's option shall be exercised automatically on the New Exercise Date,
unless prior to such date the participant has withdrawn from the Offering Period
as provided in Section 10 hereof.

     20.  Amendment or Termination.
          ------------------------

          (a)  The Board of Directors of the Company may at any time and for any
reason terminate or amend the Plan. Except as provided in Section 19 hereof, no
such termination can affect options previously granted, provided that an
Offering Period may be terminated by the Board of Directors on any Exercise Date
if the Board determines that the termination of the Offering Period or the Plan
is in the best interests of the Company and its shareholders. Except as provided
in Section 19 and this Section 20 hereof, no amendment may make any change in
any option theretofore granted which adversely affects the rights of any
participant. To the extent necessary to comply with Section 423 of the Code (or
any successor rule or provision or any other applicable law, regulation or stock
exchange rule), the Company shall obtain shareholder approval in such a manner
and to such a degree as required.

          (b)  Without shareholder consent and without regard to whether any
participant rights may be considered to have been "adversely affected," the
Board (or its committee) shall be entitled to change the Offering Periods, limit
the frequency and/or number of changes in the amount withheld during an Offering
Period, establish the exchange ratio applicable to amounts withheld in a
currency other than U.S. dollars, permit payroll withholding in excess of the
amount designated by a participant in order to adjust for delays or mistakes in
the Company's processing of properly completed withholding elections, establish
reasonable waiting and adjustment periods and/or accounting and crediting
procedures to ensure that amounts applied toward the purchase of Common Stock
for each participant properly correspond with amounts withheld from the
participant's Compensation, and establish such other limitations or procedures
as the Board (or its committee) determines in its sole discretion advisable
which are consistent with the Plan.

          (c)  In the event the Board determines that the ongoing operation of
the Plan may result in unfavorable financial accounting consequences, the Board
may, in its discretion and, to the extent necessary or desirable, modify or
amend the Plan to reduce or eliminate such accounting consequence including, but
not limited to:

                    (i)   altering the Purchase Price for any Offering Period
including an Offering Period underway at the time of the change in Purchase
Price;

                    (ii)  shortening any Offering Period so that Offering Period
ends on a new Exercise Date, including an Offering Period underway at the time
of the Board action; and

                    (iii) allocating shares.
<PAGE>

          Such modifications or amendments shall not require stockholder
approval or the consent of any Plan participants.

     21.  Notices. All notices or other communications by a participant to the
          -------
Company under or in connection with the Plan shall be deemed to have been duly
given when received in the form specified by the Company at the location, or by
the person, designated by the Company for the receipt thereof.

     22.  Conditions Upon Issuance of Shares. Shares shall not be issued with
          ----------------------------------
respect to an option unless the exercise of such option and the issuance and
delivery of such shares pursuant thereto shall comply with all applicable
provisions of law, domestic or foreign, including, without limitation, the
Securities Act of 1933, as amended, the Securities Exchange Act of 1934, as
amended, 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, the Company may require
the person exercising such option 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 applicable provisions of law.

     23.  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. It shall continue in effect for a term of ten (10)
years unless sooner terminated under Section 20 hereof.

     24.  Automatic Transfer to Low Price Offering Period. To the extent
          -----------------------------------------------
permitted by any applicable laws, regulations, or stock exchange rules if the
Fair Market Value of the Common Stock on any Exercise Date in an Offering Period
is lower than the Fair Market Value of the Common Stock on the Enrollment Date
of such Offering Period, then all participants in such Offering Period shall be
automatically withdrawn from such Offering Period immediately after the exercise
of their option on such Exercise Date and automatically re-enrolled in the
immediately following Offering Period as of the first day thereof.

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00018-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00018-of-00352.parquet"}]]