Document:

Exhibit 10.13

 Poly Circuits                           215 Park St. Bensenville, IL 60106
                                         Phone: 630-860-3560
 ----------------------------------------------------------------------------

 Date: May 27, 1999                      Fax Number: 214-503-8607

 To: Mr. Ron Allen                       Company:Performance Interconnect
 From: Joseph A. Turek

 Subject: Sale of Frisco building to Brinkman

 Dear Ron,

 I have  discussed your proposal  with the  M-Wave  Directors  and they  have
 given their approval to move forward.   I have outlined your proposal as  we
 understand it.  If there is an error please get back to me ASAP.

 1.  The current Note of $293,025 which  is to be paid out monthly  beginning
 May 1, 1999 at a rate of $50K per month as per the original agreement.

 2.  The Royalty agreement would convert to a monthly payment $25K per  month
 until the balance of $5OOK is paid.

 3.  We  would roll  the inventory  note of  $773,479 and  50%. of  the sales
 commission into a 30 month note with interest on this note at Prime plus 1%.

 4.  We would  credit you $15K  for your investment  in documents to purchase
 the property.  M-Wave would gain  ownership of those documents which will be
 delivered to M-Wave upon the acceptance of this agreement.

 5.  PC Dynamics of Texas would  immediately give notice that they would  not
 be purchasing the Frisco, TX facility and allow M-Wave to sell the  building
 to a  third party,  provided all  the  provision of  the lease  and  current
 agreements with M-Wave are met.

 If you are in agreement with the above, please put this in a legal form  for
 me to sign  off on.   Or if you  wish, I can  have Sonnenschein  draft up  a
 letter.

 /s/

 Best Regards
 Joseph A. Turek<PAGE>

                                                                    EXHIBIT 10.3

                                  ZEFER CORP.

                       2000 EMPLOYEE STOCK PURCHASE PLAN

     The following constitute the provisions of the 2000 Employee Stock Purchase
Plan of ZEFER Corp.

     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.

          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 ZEFER Corp. and any Designated Subsidiary of
the Company.

          e.   "Compensation" means the amount of money reportable on your
Federal Income Tax Withholding Statement (Form W-2) before any withholdings for
health insurance or under a Section 401(k), 125, 129 or similar plan, excluding
overtime, shift premium, incentive or bonus awards, allowances and
reimbursements for expenses such as relocation allowances for travel expenses,
income or gains attributable to restricted stock, stock options, stock
appreciation rights or other similar equity based compensation, imputed income
for non cash items, such as life insurance premiums, and similar items, whether
or not specifically itemized on Form W-2, but including, in the case of
salespersons, sales commissions to the extent determined by the Board or the
committee administering the Plan.

          f.   "Designated Subsidiary" shall mean any Subsidiary which 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 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 91/st/ day of such leave.
<PAGE>

          h.   "Enrollment Date" shall mean the first 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:

               (1)  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 Small Cap 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 such determination, as reported
in The Wall Street Journal or such other source as the Board deems reliable; or

               (2)  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 such determination, as reported in The Wall Street Journal or
such other source as the Board deems reliable; or

               (3)  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; or

               (4)  For purposes of the Enrollment Date of the first Offering
Period under the Plan, the Fair Market Value shall be the initial price to the
public as set forth in the final prospectus included within the registration
statement on Form S-1 filed with the Securities and Exchange Commission for the
initial public offering of the Company's Common Stock (the "Registration
Statement").

          k.   "Offering Periods" shall mean the periods of approximately twelve
(12) months during which an option granted pursuant to the Plan may be
exercised, commencing on the first Trading Day on or after January 1, April 1,
July 1 and October 1 of each year and terminating on the last Trading Day in the
periods ending twelve months later; provided, however, that the first Offering
Period under the Plan shall commence with the date (the "Effective Date") on
which the Securities and Exchange Commission declares the Registration Statement
effective and end on the last Trading Day on or before April 1, 2001. The
duration and timing of Offering Periods may be changed pursuant to Section 4 of
this Plan.

          l.   "Plan" shall mean this Employee Stock Purchase Plan.

          m.   "Purchase Period" shall mean the approximately one year period
commencing on the Enrollment Date and ending on the last Trading Day of the
related Offering Period; provided, however, that the first Purchase Period under
the Plan shall commence with the Effective Date and shall end on the last
Trading Day on or before April 1, 2001.

                                       2
<PAGE>

          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, in the event (i) the Company's stockholders
approve an increase in the number of shares available for issuance under the
Plan, (ii) all or a portion of such additional shares are to be issued with
respect to one or more Offering Periods that are underway at the time of such
stockholder approval ("New Shares"), and (iii) the Fair Market Value of a share
of Common Stock on the date of such approval (the "Authorization Date FMV") is
higher than the Fair Market Value on the Enrollment Date for any such Offering
Period, the Purchase Price with respect to New Shares shall be 85% of the
Authorization Date FMV or the Fair Market Value of a share of Common Stock on
the Exercise Date, whichever is lower.

          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 Nasdaq System are open for trading.

     3.   Eligibility.
          -----------

          a.   Any Employee who shall be employed by the Company at least five
(5) calendar days prior to 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 January 1, April 1, July 1 and October 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 with the Effective Date
and end on the last Trading Day on or before April 1, 2001. The Board shall have
the power to change the duration of Offering Periods (including the

                                 3
<PAGE>

commencement dates thereof) with respect to future offerings without stockholder
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 substantially in the form of Exhibit A
                                                                 ---------
authorizing payroll deductions in a form provided by the Company's payroll
office and filing it with the Company's payroll office prior to the applicable
Enrollment Date. An Employee may only participate in one Offering at a time.

          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
termination 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 ten percent (10%) 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 to not more than 10 percent (10%) or less than
zero percent (0%) not more than two (2) times during each Offering Period by
completing or filing with the Company a new subscription agreement authorizing
such change in payroll deduction rate. The Board may, in its discretion,
increase or decrease the number of participation rate changes during any
Offering Period. The change in rate shall be effective with the first full
payroll period following the fifth (5th) business day 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 Purchase Periods unless
terminated as provided in Section 10 hereof.

          d.   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

                                       4
<PAGE>

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 purchase (at the applicable Purchase Price) up to a whole number of
shares of the Company's Common Stock determined by dividing $25,000 by the Fair
Market Value of a share of Common Stock on the Enrollment Date (subject to any
adjustment pursuant to Section 19), and provided that such purchase shall be
subject to the limitations set forth in Section 3(b) and 13 hereof. The option
shall be exercisable as to 100% of the total number of shares on the Exercise
Date of the 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.  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 which have vested on such Exercise Date 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 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.

     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
substantially 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

                                       5
<PAGE>

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 500,000 shares.  If, on a given Exercise Date, the number of shares
with respect to which options are to be exercised exceeds the number of shares
then available under the Plan, the Company shall make a pro rata allocation of
the shares remaining available for purchase in as uniform a manner as shall be
practicable and as it shall determine to be equitable.

          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

                                       6
<PAGE>

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.

     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
               -------------------------
stockholders 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

                                       7
<PAGE>

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 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 Plan is in the best
interests of the Company and its stockholders.  Except as provided in Section 19
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 stockholder approval in such a manner and to such a degree as required.

          b.   Without stockholder 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.

                                       8
<PAGE>

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

                                       9
<PAGE>

                                   EXHIBIT A
                                   ---------

                                  ZEFER CORP.

                       2000 EMPLOYEE STOCK PURCHASE PLAN

                            SUBSCRIPTION AGREEMENT
                            ----------------------

_______  Original Application        Enrollment Date:  ____________
_______  Change in Payroll Deduction Rate (Complete only Section 2 and date and
sign).
_______  Change of Beneficiary (ies) (Complete only Section 8 and date and
sign).

     1.  ______________________________ hereby elects to participate in the
ZEFER Corp. 2000 Employee Stock Purchase Plan (the "EMPLOYEE STOCK PURCHASE
PLAN") and subscribes to purchase shares of the Company's Common Stock in
accordance with this Subscription Agreement and the Employee Stock Purchase
Plan.

     2.   I hereby authorize payroll deductions from each paycheck in the amount
of ____% of my Compensation on each payday (not to exceed 10%) during the
Offering Period in accordance with the Employee Stock Purchase Plan.  (Please
note that no fractional percentages are permitted.)

     3.   I understand that said payroll deductions shall be accumulated for the
purchase of shares of Common Stock at the applicable Purchase Price determined
in accordance with the Employee Stock Purchase Plan.  I understand that if I do
not withdraw from an Offering Period, any accumulated payroll deductions will be
used to automatically exercise my option.

     4.   I have received a copy of the complete Employee Stock Purchase Plan. I
understand that my participation in the Employee Stock Purchase Plan is in all
respects subject to the terms of the Plan. I understand that my ability to
exercise the option under this Subscription Agreement is subject to stockholder
approval of the Employee Stock Purchase Plan.

     5.   Shares purchased for me under the Employee Stock Purchase Plan should
be issued in the name(s) of (Employee or Employee and Spouse only):
________________.

     6.   I understand that if I dispose of any shares received by me pursuant
to the Plan within 2 years after the Enrollment Date (the first day of the
Offering Period during which I purchased such shares) or one year after the
Exercise Date, I will be treated for federal income tax purposes as having
received ordinary income at the time of such disposition in an amount equal to
the excess of the fair market value of the shares at the time such shares were
purchased by me over the price which I paid for the shares. I HEREBY AGREE TO
NOTIFY THE COMPANY IN WRITING WITHIN 30 DAYS AFTER THE DATE OF ANY DISPOSITION
OF MY SHARES AND I WILL MAKE ADEQUATE PROVISION FOR FEDERAL, STATE OR OTHER TAX
WITHHOLDING OBLIGATIONS, IF ANY, WHICH ARISE UPON THE DISPOSITION OF THE COMMON
STOCK. The Company may, but will not be obligated to, withhold from my
compensation the amount necessary to meet any applicable withholding

                                       10
<PAGE>

obligation including any withholding necessary to make available to the Company
any tax deductions or benefits attributable to sale or early disposition of
Common Stock by me. If I dispose of such shares at any time after the expiration
of the 2-year and 1-year holding periods, I understand that I will be treated
for federal income tax purposes as having received income only at the time of
such disposition, and that such income will be taxed as ordinary income only to
the extent of an amount equal to the lesser of (1) the excess of the fair market
value of the shares at the time of such disposition over the purchase price
which I paid for the shares, or (2) 15% of the fair market value of the shares
on the first day of the Offering Period. The remainder of the gain, if any,
recognized on such disposition will be taxed as capital gain.

     7.   I hereby agree to be bound by the terms of the Employee Stock Purchase
Plan.  The effectiveness of this Subscription Agreement is dependent upon my
eligibility to participate in the Employee Stock Purchase Plan.

     8.   In the event of my death, I hereby designate the following as my
beneficiary(ies) to receive all payments and shares due me under the Employee
Stock Purchase Plan:

NAME:  (Please Print) _________________________________________________________
                      (First)       (Middle)                (Last)

____________________________________________________________________
Relationship
                                    ___________________________________
                                    Address

Employee's Social
Security Number:    ____________________________________________________

Employee's Address: ____________________________________________________
                    ____________________________________________________
                    ____________________________________________________

I UNDERSTAND THAT THIS SUBSCRIPTION AGREEMENT SHALL REMAIN IN EFFECT THROUGHOUT
SUCCESSIVE OFFERING PERIODS UNLESS TERMINATED BY ME.

Dated:  _____________________________    ___________________________________
                                         Signature of Employee
                                         (Please print)

                                         ___________________________________
                                         Spouse's Signature (If beneficiary
                                         other than Spouse)

                                       11
<PAGE>

                                   EXHIBIT B
                                   ---------

                                  ZEFER CORP.

                       2000 EMPLOYEE STOCK PURCHASE PLAN

                             NOTICE OF WITHDRAWAL

     The undersigned participant in the Offering Period of the ZEFER Corp. 2000
Employee Stock Purchase Plan which began on ________________ (the "Enrollment
Date") hereby notifies the Company that he or she hereby withdraws from the
Offering Period. He or she hereby directs the Company to pay to the undersigned
as promptly as practicable all the payroll deductions credited to his or her
account with respect to such Offering Period. The undersigned understands and
agrees that his or her option for such Offering Period will be automatically
terminated. The undersigned understands further that no further payroll
deductions will be made for the purchase of shares in the current Offering
Period and the undersigned shall be eligible to participate in succeeding
Offering Periods only by delivering to the Company a new Subscription Agreement.

                              Name and Address of Participant:

                              ___________________________________

                              ___________________________________

                              ___________________________________
                              Signature:

                              ___________________________________

                              Date:______________________________

                                       12

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