<PAGE>
 
                                                                  Exhibit 10.13
                                                                  -------------
Mintz Levin Draft 9/14/98
-------------------------


                           MICROTOUCH SYSTEMS, INC.
         1998 EMPLOYEE AND CONSULTANT NON-QUALIFIED STOCK OPTION PLAN


1.   DEFINITIONS.
     ----------- 

     Unless otherwise specified or unless the context otherwise requires, the
     following terms, as used in this 1998 Employee and Consultant Non-Qualified
     Stock Option Plan, have the following meanings:

          Administrator means the Board of Directors, unless it has delegated
          ------------- 
          power to act on its behalf to the Committee, in which case the
          Administrator means the Committee.

          Affiliate means a corporation which, for purposes of Section 424 of
          ---------
          the Code, is a parent or subsidiary of the Company, direct or
          indirect.

          Board of Directors means the Board of Directors of the Company.
          ------------------

          Code means the United States Internal Revenue Code of 1986, as
          ----
          amended.

          Committee means the committee of the Board of Directors to which the
          --------- 
          Board of Directors has delegated power to act under or pursuant to the
          provisions of the Plan.

          Common Stock means shares of the Company's common stock, $.01 par
          ------------  
          value per share.

          Company means MicroTouch Systems, Inc., a Massachusetts corporation.
          -------

          Disability or Disabled means permanent and total disability as defined
          ----------    --------
          in Section 22(e)(3) of the Code.

          Fair Market Value of a Share of Common Stock means:
          -----------------

          (1)  If the Common Stock is listed on a national securities exchange
          or traded in the over-the-counter market and sales prices are
          regularly reported for the Common Stock, the closing or last price of
          the Common Stock on the Composite Tape or other comparable reporting
          system for the trading day immediately preceding the applicable date;

                                       1
<PAGE>
 
          (2)  If the Common Stock is not traded on a national securities
          exchange but is traded on the over-the-counter market, if sales prices
          are not regularly reported for the Common Stock for the trading day
          referred to in clause (1), and if bid and asked prices for the Common
          Stock are regularly reported, the mean between the bid and the asked
          price for the Common Stock at the close of trading in the over-the-
          counter market for the trading day on which Common Stock was traded
          immediately preceding the applicable date; and

          (3)  If the Common Stock is neither listed on a national securities
          exchange nor traded in the over-the-counter market, such value as the
          Administrator, in good faith, shall determine.

          ISO means an option meant to qualify as an incentive stock option
          ---
          under Section 422 of the Code.

          Employee means any employee of the Company or of an Affiliate who is
          -------- 
          not also a director or officer of the Company or such Affiliate,
          designated by the Administrator to be eligible to be granted one or
          more Options under the Plan.

          Non-Qualified Option means an option which is not intended to qualify
          -------------------- 
          as an ISO.

          Option means a Non-Qualified Option granted under the Plan.
          ------ 

          Option Agreement means an agreement between the Company and a
          ----------------  
          Participant delivered pursuant to the Plan, in such form as the
          Administrator shall approve.

          Participant means an Employee to whom one or more Options are granted
          ----------- 
          under the Plan. As used herein, "Participant" shall include
          "Participant's Survivors" where the context requires.

          Plan means this MicroTouch 1998 Employee and Consultant Non-Qualified
          ----  
          Stock Option Plan.

          Shares means shares of the Common Stock as to which Options have been
          ------  
          or may be granted under the Plan or any shares of capital stock into
          which the Shares are changed or for which they are exchanged within
          the provisions of Paragraph 3 of the Plan. The Shares issued upon
          exercise of Options granted under the Plan may be authorized and
          unissued shares or shares held by the Company in its treasury, or
          both.

          Survivors means a deceased Participant's legal representatives and/or
          --------- 
          any person or persons who acquired the Participant's rights to an
          Option by will or by the laws of descent and distribution.

                                       2
<PAGE>
 
2.   PURPOSES OF THE PLAN.
     -------------------- 

     The Plan is intended to encourage ownership of Shares by Employees and
certain consultants to the Company in order to attract such people, to induce
them to work for the benefit of the Company or of an Affiliate and to provide
additional incentive for them to promote the success of the Company or of an
Affiliate. The Plan provides exclusively for the granting of Non-Qualified
Options.

3.   SHARES SUBJECT TO THE PLAN.
     -------------------------- 

     The number of Shares which may be issued from time to time pursuant to this
Plan shall be one million (1,000,000), or the equivalent of such number of
Shares after the Administrator, in its sole discretion, has interpreted the
effect of any stock split, stock dividend, combination, recapitalization or
similar transaction in accordance with Paragraph 16 of the Plan.

     If an Option ceases to be "outstanding", in whole or in part, the Shares
which were subject to such Option shall be available for the granting of other
Options under the Plan. Any Option shall be treated as "outstanding" until such
Option is exercised in full, or terminates or expires under the provisions of
the Plan, or by agreement of the parties to the pertinent Option Agreement.

4.   ADMINISTRATION OF THE PLAN.
     -------------------------- 

     The Administrator of the Plan will be the Board of Directors, except to the
extent the Board of Directors delegates its authority to the Committee, in which
case the Committee shall be the Administrator. Subject to the provisions of the
Plan, the Administrator is authorized to:

     a.   Interpret the provisions of the Plan or of any Option or Option
          Agreement and to make all rules and determinations which it deems
          necessary or advisable for the administration of the Plan;

     b.   Determine which of the Employees and consultants shall be granted
          Options;

     c.   Determine the number of Shares for which an Option or Options shall be
          granted; and

     d.   Specify the terms and conditions upon which an Option or Options may
          be granted.

The interpretation and construction by the Administrator of any provisions of
the Plan or of any Option granted under it shall be final, unless otherwise
determined by the Board of Directors, if the Administrator is the Committee.

                                       3
<PAGE>
 
5.   ELIGIBILITY FOR PARTICIPATION.
     ----------------------------- 

     The Administrator will, in its sole discretion, name the Participants in
the Plan, provided, however, that each Participant must be an Employee or
consultant of the Company or of an Affiliate at the time an Option is granted.
Notwithstanding the foregoing, the Administrator may authorize the grant of an
Option to a person not then an employee or consultant of the Company or of an
Affiliate; provided, however, that the actual grant of such Option shall be
conditioned upon such person becoming eligible to become a Participant at or
prior to the time of the delivery of the Option Agreement evidencing such
Option. The granting of any Option to any individual shall neither entitle that
individual to, nor disqualify him or her from, participation in any other grant
of Options.

6.   TERMS AND CONDITIONS OF OPTIONS.
     ------------------------------- 

     Each Option shall be set forth in writing in an Option Agreement, duly
executed by the Company and, to the extent required by law or requested by the
Company, by the Participant.  Each Option shall be subject to the terms and
conditions which the Administrator determines to be appropriate and in the best
interest of the Company, subject to the following minimum standards:

          a.   Option Price:  Each Option Agreement shall state the option price
               (per share) of the Shares covered by each Option, which option
               price shall be determined by the Administrator but shall not be
               less than the Fair Market Value per share of Common Stock;

          b.   Each Option Agreement shall state the number of Shares to which
               it pertains;

          c.   Each Option Agreement shall state the date or dates on which it
               first is exercisable and the date after which it may no longer be
               exercised, and may provide that the Option rights accrue or
               become exercisable in installments over a period of months or
               years, or upon the occurrence of certain conditions or the
               attainment of stated goals or events; and

          d.   Exercise of any Option may be conditioned upon the Participant's
               execution of a Share purchase agreement in form satisfactory to
               the Administrator providing for certain protections for the
               Company and its other shareholders, including requirements that:

               i.     The Participant's or the Participant's Survivors' right to
                      sell or transfer the Shares may be restricted; and

               ii.    The Participant or the Participant's Survivors may be
                      required to execute letters of investment intent.

                                       4
<PAGE>
 
7.   EXERCISE OF OPTIONS AND ISSUE OF SHARES.
     --------------------------------------- 

     An Option (or any part or installment thereof) shall be exercised by giving
written notice to the Company at its principal executive office address,
together with provision for payment of the full purchase price in accordance
with this Paragraph for the Shares as to which the Option is being exercised,
and upon compliance with any other condition(s) set forth in the Option
Agreement. Such written notice shall be signed by the person exercising the
Option, shall state the number of Shares with respect to which the Option is
being exercised and shall contain any representation required by the Plan or the
Option Agreement. Payment of the purchase price for the Shares as to which such
Option is being exercised shall be made (a) in United States dollars in cash or
by check, or (b) at the discretion of the Administrator, through delivery of
shares of Common Stock having a Fair Market Value equal as of the date of the
exercise to the cash exercise price of the Option, or (c) at the discretion of
the Administrator, by having the Company retain from the shares otherwise
issuable upon exercise of the Option, a number of shares having a Fair Market
Value equal as of the date of exercise to the exercise price of the Option, or
(d) at the discretion of the Administrator, by delivery of the grantee's
personal recourse note bearing interest payable not less than annually at no
less than 100% of the applicable Federal rate, as defined in Section 1274(d) of
the Code, or (e) at the discretion of the Administrator, in accordance with a
cashless exercise program established with a securities brokerage firm, and
approved by the Company's management, or (f) at the discretion of the
Administrator, by any combination of (a), (b), (c), (d) and (e) above.

     The Company shall then reasonably promptly deliver the Shares as to which
such Option was exercised to the Participant (or to the Participant's Survivors,
as the case may be). In determining what constitutes "reasonably promptly," it
is expressly understood that the delivery of the Shares may be delayed by the
Company in order to comply with any law or regulation (including, without
limitation, state securities or "blue sky" laws) which requires the Company to
take any action with respect to the Shares prior to their issuance. The Shares
shall, upon delivery, be evidenced by an appropriate certificate or certificates
for fully paid, non-assessable Shares.

     The Administrator shall have the right to accelerate the date of exercise
of any installment of any Option. The Administrator may, in its discretion,
amend any term or condition of an outstanding Option provided (i) such term or
condition as amended is permitted by the Plan and (ii) any such amendment shall
be made only with the consent of the Participant to whom the Option was granted,
or in the event of the death of the Participant, the Participant's Survivors, if
the amendment is adverse to the Participant.

8.   RIGHTS AS A SHAREHOLDER.
     ----------------------- 

     No Participant to whom an Option has been granted shall have rights as a
shareholder with respect to any Shares covered by such Option, except after due
exercise of the Option and tender of the full purchase price for the Shares
being purchased pursuant to such exercise and registration of the Shares in the
Company's share register in the name of the Participant.

                                       5
<PAGE>
 
9.   ASSIGNABILITY AND TRANSFERABILITY OF OPTIONS.
     -------------------------------------------- 

     By its terms, an Option granted to a Participant shall not be transferable
by the Participant other than (i) by will or by the laws of descent and
distribution, or (ii) as otherwise determined by the Administrator and set forth
in the applicable Option Agreement. The designation of a beneficiary of an
Option by a Participant shall not be deemed a transfer prohibited by this
Paragraph. Except as provided above, an Option shall be exercisable, during the
Participant's lifetime, only by such Participant (or by his or her legal
representative) and shall not be assigned, pledged or hypothecated in any way
(whether by operation of law or otherwise) and shall not be subject to
execution, attachment or similar process. Any attempted transfer, assignment,
pledge, hypothecation or other disposition of any Option or of any rights
granted thereunder contrary to the provisions of this Plan, or the levy of any
attachment or similar process upon an Option, shall be null and void.

10.  EFFECT OF TERMINATION OF SERVICE OTHER THAN "FOR CAUSE" OR DEATH OR
     -------------------------------------------------------------------
     DISABILITY.
     ---------- 

     Except as otherwise provided in the pertinent Option Agreement, in the
event of a termination of service (whether as an employee or consultant) with
the Company or an Affiliate before the Participant has exercised all Options,
the following rules apply:

     a.   A Participant who ceases to be an employee or consultant of the
          Company or of an Affiliate (for any reason other than termination "for
          cause", Disability, or death for which events there are special rules
          in Paragraphs 11, 12, and 13, respectively), may exercise any Option
          granted to him or her to the extent that the Option is exercisable on
          the date of such termination of service, but only within such term as
          the Administrator has designated in the pertinent Option Agreement.

     b.   The provisions of this Paragraph, and not the provisions of Paragraph
          12 or 13, shall apply to a Participant who subsequently becomes
          Disabled or dies after the termination of employment or consultancy,
          provided, however, in the case of a Participant's Disability or death
          within three (3) months after the termination of employment or
          consultancy, the Participant or the Participant's Survivors may
          exercise the Option within one (1) year after the date of the
          Participant's termination of employment, but in no event after the
          date of expiration of the term of the Option.

     c.   Notwithstanding anything herein to the contrary, if subsequent to a
          Participant's termination of employment or termination of consultancy,
          but prior to the exercise of an Option, the Board of Directors
          determines that, either prior or subsequent to the Participant's
          termination, the Participant engaged in conduct which would constitute
          "cause", then such Participant shall forthwith cease to have any right
          to exercise any Option.

                                       6
<PAGE>
 
     d.   A Participant to whom an Option has been granted under the Plan who is
          absent from work with the Company or with an Affiliate because of
          temporary disability (any disability other than a permanent and total
          Disability as defined in Paragraph 1 hereof), or who is on leave of
          absence for any purpose, shall not, during the period of any such
          absence, be deemed, by virtue of such absence alone, to have
          terminated such Participant's employment or consultancy with the
          Company or with an Affiliate, except as the Administrator may
          otherwise expressly provide.

     e.   Except as required by law or as set forth in the pertinent Option
          Agreement, Options granted under the Plan shall not be affected by any
          change of a Participant's status within or among the Company and any
          Affiliates, so long as the Participant continues to be an employee or
          consultant of the Company or any Affiliate.


11.  EFFECT OF TERMINATION OF SERVICE "FOR CAUSE".
     -------------------------------------------- 

     Except as otherwise provided in the pertinent Option Agreement, the
following rules apply if the Participant's service (whether as an employee or
consultant) with the Company or an Affiliate is terminated "for cause" prior to
the time that all his or her outstanding Options have been exercised:

     a.   All outstanding and unexercised Options as of the time the Participant
          is notified his or her service is terminated "for cause" will
          immediately be forfeited.

     b.   For purposes of this Plan, "cause" shall include (and is not limited
          to) dishonesty with respect to the Company or any Affiliate,
          insubordination, substantial malfeasance or non-feasance of duty,
          unauthorized disclosure of confidential information, and conduct
          substantially prejudicial to the business of the Company or any
          Affiliate.  The determination of the Administrator as to the existence
          of "cause" will be conclusive on the Participant and the Company.

     c.   "Cause" is not limited to events which have occurred prior to a
          Participant's termination of service, nor is it necessary that the
          Administrator's finding of "cause" occur prior to termination.  If the
          Administrator determines, subsequent to a Participant's termination of
          service but prior to the exercise of an Option, that either prior or
          subsequent to the Participant's termination the Participant engaged in
          conduct which would constitute "cause," then the right to exercise any
          Option is forfeited.

     d.   Any definition in an agreement between the Participant and the Company
          or an Affiliate, which contains a conflicting definition of "cause"
          for termination and which is in effect at the time of such
          termination, shall supersede the definition in this Plan with respect
          to such Participant.

                                       7
<PAGE>
 
12.  EFFECT OF TERMINATION OF SERVICE FOR DISABILITY.
     ----------------------------------------------- 

     Except as otherwise provided in the pertinent Option Agreement, a
Participant who ceases to be an employee or consultant of the Company or of an
Affiliate by reason of Disability may exercise any Option granted to such
Participant:

     a.   To the extent exercisable but not exercised on the date of Disability;
          and

     b.   In the event rights to exercise the Option accrue periodically, to the
          extent of a pro rata portion of any additional rights as would have
          accrued had the Participant not become Disabled prior to the end of
          the accrual period which next ends following the date of Disability.
          The proration shall be based upon the number of days of such accrual
          period prior to the date of Disability.

     A Disabled Participant may exercise such rights only within the period
ending one (1) year after the date of the Participant's termination of
employment or consultancy, as the case may be, notwithstanding that the
Participant might have been able to exercise the Option as to some or all of the
Shares on a later date if the Participant had not become disabled and had
continued to be an employee or consultant or, if earlier, within the originally
prescribed term of the Option.

     The Administrator shall make the determination both of whether Disability
has occurred and the date of its occurrence (unless a procedure for such
determination is set forth in another agreement between the Company and such
Participant, in which case such procedure shall be used for such determination).
If requested, the Participant shall be examined by a physician selected or
approved by the Administrator, the cost of which examination shall be paid for
by the Company.

13.  EFFECT OF DEATH WHILE AN EMPLOYEE OR CONSULTANT.
     ----------------------------------------------- 

     Except as otherwise provided in the pertinent Option Agreement, in the
event of the death of a Participant while the Participant is an employee or
consultant of the Company or of an Affiliate, such Option may be exercised by
the Participant's Survivors:

     a.   To the extent exercisable but not exercised on the date of death; and

     b.   In the event rights to exercise the Option accrue periodically, to the
          extent of a pro rata portion of any additional rights which would have
          accrued had the Participant not died prior to the end of the accrual
          period which next ends following the date of death.  The proration
          shall be based upon the number of days of such accrual period prior to
          the Participant's death.

                                       8
<PAGE>
 
     If the Participant's Survivors wish to exercise the Option, they must take
all necessary steps to exercise the Option within one (1) year after the date of
death of such Participant, notwithstanding that the decedent might have been
able to exercise the Option as to some or all of the Shares on a later date if
he or she had not died and had continued to be an employee or consultant or, if
earlier, within the originally prescribed term of the Option.

14.  PURCHASE FOR INVESTMENT.
     ----------------------- 

     Unless the offering and sale of the Shares to be issued upon the particular
exercise of an Option shall have been effectively registered under the
Securities Act of 1933, as now in force or hereafter amended (the "1933 Act"),
the Company shall be under no obligation to issue the Shares covered by such
exercise unless and until the following conditions have been fulfilled:

     a.   The person(s) who exercise(s) such Option shall warrant to the
          Company, prior to the receipt of such Shares, that such person(s) are
          acquiring such Shares for their own respective accounts, for
          investment, and not with a view to, or for sale in connection with,
          the distribution of any such Shares, in which event the person(s)
          acquiring such Shares shall be bound by the provisions of the
          following legend which shall be endorsed upon the certificate(s)
          evidencing their Shares issued pursuant to such exercise or such
          grant:

               "The shares represented by this certificate have been taken for
               investment and they may not be sold or otherwise transferred by
               any person, including a pledgee, unless (1) either (a) a
               Registration Statement with respect to such shares shall be
               effective under the Securities Act of 1933, as amended, or (b)
               the Company shall have received an opinion of counsel
               satisfactory to it that an exemption from registration under such
               Act is then available, and (2) there shall have been compliance
               with all applicable state securities laws."

     b.   At the discretion of the Administrator, the Company shall have
          received an opinion of its counsel that the Shares may be issued upon
          such particular exercise in compliance with the 1933 Act without
          registration thereunder.

15.  DISSOLUTION OR LIQUIDATION OF THE COMPANY.
     ----------------------------------------- 

     Upon the dissolution or liquidation of the Company, all Options granted
under this Plan which as of such date shall not have been exercised will
terminate and become null and void; provided, however, that if the rights of a
Participant or a Participant's Survivors have not otherwise terminated and
expired, the Participant or the Participant's Survivors will have the right
immediately prior to such dissolution or liquidation to exercise any Option to
the extent that the Option is exercisable as of the date immediately prior to
such dissolution or liquidation.

                                       9
<PAGE>
 
16.  ADJUSTMENTS.
     ----------- 

     Upon the occurrence of any of the following events, a Participant's rights
with respect to any Option granted to him or her hereunder which has not
previously been exercised in full shall be adjusted as hereinafter provided,
unless otherwise specifically provided in the pertinent Option Agreement:

     A.   Stock Dividends and Stock Splits. If (i) the shares of Common Stock
          -------------------------------- 
shall be subdivided or combined into a greater or smaller number of shares or if
the Company shall issue any shares of Common Stock as a stock dividend on its
outstanding Common Stock, or (ii) additional shares or new or different shares
or other securities of the Company or other non-cash assets are distributed with
respect to such shares of Common Stock, the number of shares of Common Stock
deliverable upon the exercise of such Option may be appropriately increased or
decreased proportionately, and appropriate adjustments may be made in the
purchase price per share to reflect such events.

     B.   Consolidations or Mergers. If the Company is to be consolidated with
          -------------------------  
or acquired by another entity in a merger, sale of all or substantially all of
the Company's assets or otherwise (an "Acquisition"), the Administrator or the
board of directors of any entity assuming the obligations of the Company
hereunder (the "Successor Board"), shall, as to outstanding Options, either (i)
make appropriate provision for the continuation of such Options by substituting
on an equitable basis for the Shares then subject to such Options either the
consideration payable with respect to the outstanding shares of Common Stock in
connection with the Acquisition or securities of any successor or acquiring
entity; or (ii) upon written notice to the Participants, provide that all
Options must be exercised (either to the extent then exercisable or, at the
discretion of the Administrator, all Options being made fully exercisable for
purposes of this Subparagraph), within a specified number of days of the date of
such notice, at the end of which period the Options shall terminate; or (iii)
terminate all Options in exchange for a cash payment equal to the excess of the
Fair Market Value of the shares subject to such Options (either to the extent
then exercisable or, at the discretion of the Administrator, all Options being
made fully exercisable for purposes of this Subparagraph) over the exercise
price thereof.

     C.  Recapitalization or Reorganization. In the event of a recapitalization
         ----------------------------------
or reorganization of the Company (other than a transaction described in
Subparagraph B above) pursuant to which securities of the Company or of another
corporation are issued with respect to the outstanding shares of Common Stock, a
Participant upon exercising an Option shall be entitled to receive for the
purchase price paid upon such exercise the securities which would have been
received if such Option had been exercised prior to such recapitalization or
reorganization.

                                       10
<PAGE>
 
17.  ISSUANCES OF SECURITIES.
     ----------------------- 

     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 subject to Options. Except as
expressly provided herein, no adjustments shall be made for dividends paid in
cash or in property (including without limitation, securities) of the Company.

18.  FRACTIONAL SHARES.
     ----------------- 

     No fractional shares shall be issued under the Plan and the person
exercising such right shall receive from the Company cash in lieu of such
fractional shares equal to the Fair Market Value thereof.

19.  WITHHOLDING.
     ----------- 

     In the event that any federal, state, or local income taxes, employment
taxes, Federal Insurance Contributions Act ("F.I.C.A.") withholdings or other
amounts are required by applicable law or governmental regulation to be withheld
from the Participant's salary, wages or other remuneration in connection with
the exercise of an Option, the Company may withhold from the Participant's
compensation, if any, or may require that the Participant advance in cash to the
Company, or to any Affiliate of the Company which employs or employed the
Participant, the amount of such withholdings unless a different withholding
arrangement, including the use of shares of the Company's Common Stock or a
promissory note, is authorized by the Administrator (and permitted by law). For
purposes hereof, the fair market value of the shares withheld for purposes of
payroll withholding shall be determined in the manner provided in Paragraph 1
above, as of the most recent practicable date prior to the date of exercise. If
the fair market value of the shares withheld is less than the amount of payroll
withholdings required, the Participant may be required to advance the difference
in cash to the Company or the Affiliate employer. The Administrator in its
discretion may condition the exercise of an Option for less than the then Fair
Market Value on the Participant's payment of such additional withholding.

20.  TERMINATION OF THE PLAN.
     ----------------------- 

     The Plan will terminate on August 6, 2008.

21.  AMENDMENT OF THE PLAN AND AGREEMENTS.
     ------------------------------------ 

     The Plan may be amended by the Administrator, including, without
limitation, to the extent necessary to qualify any or all outstanding Options
granted under the Plan or Options to be granted under the Plan for favorable
federal income tax treatment, and to the extent necessary 

                                       11
<PAGE>
 
to qualify the shares issuable upon exercise of any outstanding Options granted,
or Options to be granted, under the Plan for listing on any national securities
exchange or quotation in any national automated quotation system of securities
dealers. Any amendment approved by the Administrator which the Administrator
determines is of a scope that requires shareholder approval shall be subject to
obtaining such shareholder approval. Any modification or amendment of the Plan
shall not, without the consent of a Participant, adversely affect his or her
rights under an Option previously granted to him or her. With the consent of the
Participant affected, the Administrator may amend outstanding Option Agreements
in a manner which may be adverse to the Participant but which is not
inconsistent with the Plan. In the discretion of the Administrator, outstanding
Option Agreements may be amended by the Administrator in a manner which is not
adverse to the Participant.

22.  EMPLOYMENT OR OTHER RELATIONSHIP.
     -------------------------------- 

     Nothing in this Plan or any Option Agreement shall be deemed to prevent the
Company or an Affiliate from terminating the employment or consultancy status of
a Participant, nor to prevent a Participant from terminating his or her own
employment or consultancy status or to give any Participant a right to be
retained in employment or other service by the Company or any Affiliate for any
period of time.


23.  GOVERNING LAW.
     ------------- 

     This Plan shall be construed and enforced in accordance with the law of The
Commonwealth of Massachusetts.


Agreements:  1998 Stock Option Plan

                                       12