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                                                                   EXHIBIT 10.11

                     COMPUTER NETWORK TECHNOLOGY CORPORATION
                           1997 RESTRICTED STOCK PLAN

         1. Purpose. The purpose of this 1997 Restricted Stock Plan (the "Plan")
is to promote the interests of Computer Network Technology Corporation, a
Minnesota corporation (the "Company"), and its shareholders by providing
personnel (other than officers or directors) of the Company and any parent or
subsidiary thereof with an opportunity to acquire a proprietary interest in the
Company and thereby develop a stronger incentive to put forth maximum effort for
the continued success and growth of the Company. In addition, the Company's
ability to provide the opportunity to acquire a proprietary interest in the
Company will aid in attracting and retaining personnel of outstanding ability.

         2. Administration.

                  (a) General. This Plan shall be administered by a committee of
two or more directors of the Company (the "Committee") appointed by the
Company's Board of Directors (the "Board"). If the Board has not appointed a
committee to administer this Plan, then the Board shall constitute the
Committee. The Committee shall have the power, subject to the limitations
contained in this Plan, to fix any terms and conditions for the grant or
exercise of any award under this Plan. No director shall serve as a member of
the Committee unless such director is a "non-employee director" as that term is
defined in Rule 16b-3 promulgated under the Securities Exchange Act of 1934, as
amended (the "Exchange Act"), or any successor statute or regulation
comprehending the same subject matter. A majority of the members of the
Committee shall constitute a quorum for any meeting of the Committee, and the
acts of a majority of the members present at any meeting at which a quorum is
present or the acts unanimously approved in writing by all members of the
Committee shall be the acts of the Committee. Subject to the provisions of this
Plan, the Committee may from time to time adopt such rules for the
administration of this Plan as it deems appropriate. The decision of the
Committee on any matter affecting this Plan or the rights and obligations
arising under this Plan or any award granted hereunder, shall be final,
conclusive and binding upon all persons, including without limitation the
Company, shareholders and participants in this Plan.

                  (b) Indemnification. To the full extent permitted by law, (i)
no member of the Committee or person to whom authority under this Plan is
delegated shall be liable for any action or determination taken or made in good
faith with respect to this Plan or any award granted hereunder and (ii) the
members of the Committee and each person to whom authority under this Plan is
delegated shall be entitled to indemnification by the Company against and from
any loss incurred by such member or person by reason of any such actions and
determinations.

                  (c) Delegation of Authority. The Committee may delegate all or
any part of its authority under this Plan to the Chief Executive Officer of the
Company for purposes of granting and administering awards granted to persons
other than persons who are then subject to the reporting requirements of Section
16 of the Exchange Act ("Section 16 Individuals"). The Chief Executive Officer
of the Company may, in turn, delegate such authority to such other officer of
the Company as the Chief Executive Officer may determine.

         3. Shares. The shares that may be made subject to awards granted under
this Plan shall be authorized and unissued shares of Common Stock of the
Company, par value $.01 per share ("Shares," and each individually a "Share"),
and they shall not exceed 100,000 Shares in the aggregate, subject to adjustment
as provided in paragraph 10, below. If any Shares subject to awards granted
under this Plan are cancelled or returned to the Company because any conditions,
limitations or restrictions imposed on such awards are not complied with or
satisfied, such Shares may not be made subject to subsequent awards granted
under this Plan.

         4. Eligible Participants. Stock awards may be granted under this Plan
to any full-time employee of the Company, or any parent or subsidiary thereof,
who is not, at the time of such award, an officer or director of the Company or
any parent thereof. Stock awards also may be granted to (i) individuals or
entities who are not employees but who provide services to the Company or a
parent or subsidiary thereof in the capacity of an advisor or consultant and
(ii) any individual or entity that the Company desires to induce to become an
employee, advisor or consultant, but any such grant shall be contingent upon
such individual or entity becoming employed by the Company or a parent or
subsidiary thereof. References herein to "employment" and similar terms (except
"employee") shall include the providing of services in the capacity of an
advisor or consultant. The employees and other individuals and entities to whom
awards may be granted pursuant to this paragraph 4 are referred to herein as
"Eligible Participants."
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         5. Terms and Conditions of Stock Awards. The Committee may, from time
to time during the term of this Plan, grant stock awards to such Eligible
Participants as the Committee may determine, such stock awards consisting of
grants of Shares to be issued to the designated Eligible Participants. In
determining the Eligible Participants to whom stock awards shall be granted and
the number of Shares to be covered by each stock award, the Committee may take
into account the nature of the services rendered by the respective Eligible
Participants, their present and potential contributions to the success of the
Company, and such other factors as the Committee in its sole discretion may deem
relevant. Shares issued pursuant to any stock award may be unrestricted or may
be subject to such conditions, limitations and restrictions, if any, as may be
provided in a written agreement pursuant to paragraph 6 providing for the stock
award. The maximum number of Shares that may be granted to any one Eligible
Participant pursuant to any stock awards under this Plan in any fiscal year of
the Company may not exceed 25,000 Shares (subject to adjustment pursuant to
paragraph 10 hereof).

         6. Agreements. Stock awards granted under this Plan may, but need not,
be made subject to a written agreement in such form or forms as the Committee
may from time to time determine.

         7. Fair Market Value. For purposes of this Plan, the "Fair Market
Value" of a Share at a specified date shall, unless otherwise expressly provided
in this Plan, mean:

                  (a) the closing sale price of a Share on the date immediately
         preceding that date or, if no sale of Shares shall have occurred on
         that date, on the next preceding day on which a sale of Shares occurred
         on the National Association of Securities Dealers, Inc. Automated
         Quotations National Market System (NMS), or

                  (b) if the Shares are not quoted on the NMS, what the
         Committee determines in good faith to be 100% of the fair market value
         of a Share on that date. If the NMS has closed for the day at the time
         the event occurs that triggers a determination of Fair Market Value,
         all references in this paragraph to the "date immediately preceding
         that date" shall be deemed to be references to "that date."

         8. Tax Withholding. A person receiving a stock award may, as a
condition precedent to receiving the award or to receiving Shares following the
lapse of conditions, limitations or restrictions relating thereto, be required
to pay the Company a cash amount equal to the amount of any required
withholdings. In lieu of all or any part of such a cash payment, the Committee
may, but shall not be required to, provide in any agreement provided for in
paragraph 6 (or provide by Committee action with respect to any outstanding
award) that a person may cover all or any part of the required withholdings, and
any additional withholdings up to the amount needed to cover the individual's
full FICA and federal, state and local income tax liability with respect to
income arising from the award, through the delivery to the Company of
unencumbered Shares, through a reduction in the number of Shares delivered to
the person receiving the award or through a subsequent return to the Company of
Shares delivered to the person receiving the award (in each case, such Shares
having an aggregate Fair Market Value on the date on which the withholding
obligation arises equal to the amount of the withholding taxes being paid
through such delivery, reduction or subsequent return of Shares).

         9. Dissolution, Liquidation, Merger. In the event of (a) the proposed
dissolution or liquidation of the Company, (b) a proposed sale of substantially
all of the assets of the Company or (c) a proposed merger, consolidation of the
Company with or into any other entity, regardless of whether the Company is the
surviving corporation, or a proposed statutory share exchange with any other
entity (the actual effective date of the dissolution, liquidation, sale, merger,
consolidation or exchange being herein called an "Event"), the Committee may,
but shall not be obligated to, either (i) if the Event is a merger,
consolidation or statutory share exchange, make appropriate provision for the
protection of outstanding awards granted under this Plan by the substitution, in
lieu of such awards, of awards covering appropriate voting common stock (the
"Survivor's Stock") of the corporation surviving any such merger or
consolidation or, if appropriate, the parent corporation of the Company or such
surviving corporation, or (ii) declare, at least twenty days prior to the Event,
and provide written notice to each holder of an outstanding award of the
declaration, that all conditions, limitations and restrictions relating to each
outstanding award are cancelled and terminated and that the Shares subject to
each such outstanding award are unrestricted.

         10. Adjustments. In the event of any reorganization, merger,
consolidation, recapitalization, liquidation, reclassification, stock dividend,
stock split, combination of shares, rights offering, or extraordinary dividend
or divestiture (including a spin-off), or any other change in the corporate
structure or Shares of the Company, the Committee (or if the Company does not
survive any such transaction, a comparable committee of the Board of Directors
of the surviving corporation) may, without the consent of any holder of an
award, make such adjustment as it determines in its discretion to be appropriate
as to the number and kind of securities subject to and reserved under this Plan
and, in order to prevent dilution or enlargement of rights of participants in
this Plan, the number and kind of securities subject to outstanding awards.

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         11. Compliance With Legal Requirements. No certificate for Shares
distributable under this Plan shall be issued and delivered unless the issuance
of such certificate complies with all applicable legal requirements including,
without limitation, compliance with the provisions of applicable state
securities laws, the Securities Act of 1933, as amended, and the Exchange Act.

         12. Right to Terminate Employment. Nothing contained in this Plan, or
in any award granted pursuant to this Plan, shall confer upon any person any
right to continued employment by the Company or any parent or subsidiary of the
Company or limit in any way the right of the Company or any such parent or
subsidiary to terminate such person's employment at any time.

         13. Governing Law. To the extent that federal laws do not otherwise
control, this Plan and all determinations made and actions taken under this Plan
shall be governed by the laws of the State of Minnesota, without regard to the
conflicts of law provisions thereof, and construed accordingly.

         14. Amendment and Discontinuance of Plan. The Board may at any time
amend, suspend or discontinue this Plan; provided, however, that no amendment to
this Plan shall, without the consent of the holder of the award, alter or impair
any award previously granted under this Plan. To the extent considered necessary
to comply with applicable provisions of the Code, any such amendments to this
Plan may be made subject to approval by the shareholders of the Company.

         15. Term.

                  (a) Effective Date. This Plan shall be effective as of May 15,
1997.

                  (b) Termination. This Plan shall remain in effect until all
Shares subject to it are distributed or this Plan is terminated under paragraph
14 above.

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                                                                   EXHIBIT 10.13

                        1992 EMPLOYEE STOCK PURCHASE PLAN
                        (AS AMENDED THROUGH OCTOBER 2001)

         1. Purpose and Scope of Plan. The purpose of the 1992 Employee Stock
Purchase Plan (the "Plan") is to provide the employees of Computer Network
Technology Corporation (the "Company") and its affiliates with an opportunity to
acquire a proprietary interest in the Company through the purchase of its common
stock and, thus, to develop a stronger incentive to work for the continued
success of the Company. The Plan is intended to be an "employee stock purchase
plan" within the meaning of Section 473(b) of the Internal Revenue Code of 1986,
as amended, and shall be interpreted and administered in a manner consistent
with such intent.

         2. Definitions.

                  2.1 Whenever used in this Plan:

                           (a) "Affiliate" means any parent or subsidiary
                  corporation of the Company as defined in Sections 424(e) and
                  424(f) of the Code and whose participation in the Plan has
                  been approved by the Board of Directors.

                           (b) Intentionally Omitted

                           (c) "Board of Directors" means the board of directors
                  of the Company.

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

                           (e) "Committee" means the Compensation Committee of
                  the Board of Directors.

                           (f) "Common Stock" means the common stock, par value
                  $.01 per share, of the Company.

                           (g) "Company" means Computer Network Technology
                  Corporation.

                           (h) "Compensation" means the wages, tips and other
                  compensation paid to a Participant by the Company or an
                  Affiliate and reportable in the box designated "wages, tips,
                  other compensation" on Treasury Form W-2 (or any comparable
                  successor box or form) for the calendar year but determined
                  without regard to any rules that limit the remuneration
                  included in wages based on the nature or location of the
                  employment or the services performed (such as the exception
                  for agricultural labor in section 3401(a)(2) of the Code).
                  Compensation shall be determined on a cash basis. Provided,
                  however, that Compensation shall include elective
                  contributions made by the Company or an Affiliate on behalf of
                  a Participant that are not includible in gross income under
                  sections 125, 402(a)(8), 402(h), 403(b), 414(h)(2) and 457 of
                  the Code including elective contributions authorized by a
                  Participant under a cafeteria plan or any other qualified cash
                  or deferred arrangement under section 401(k) of the Code.
                  Provided, further that Compensation shall exclude all of the
                  following: (i) reimbursements or other expense allowances
                  including foreign service allowances, station allowances,
                  foreign tax equalization payment and other similar payments;
                  (ii) welfare and fringe benefits (both cash and non-cash)
                  including third-party sick pay (i.e., short-term and long-term
                  disability insurance benefits), income imputed from insurance
                  coverages and premiums, employee discounts and other similar
                  amounts, payments for vacation or sick leave accrued but not
                  taken, final payments on account of termination of employment
                  (i.e., severance payments) and settlement for accrued but
                  unused vacation and sick leave; (iii) moving expenses; (iv)
                  deferred compensation (both when deferred and when received);
                  (v) the Saturday Night Stay-over Program; and (vi) any income
                  related to the exercise of nonqualified stock options, the
                  sale of stock within eighteen months of receipt under the
                  Employee Stock Purchase Plan, the stock options received
                  pursuant to any Company or Affiliate stock option plan, or the
                  vesting of restricted stock under any Company or Affiliate
                  stock award plan.
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                           (i) "Eligible Employee" means any employee of the
                  Company or an Affiliate whose customary employment is (i) at
                  least 20 hours per week and (ii) for more than 5 months in any
                  calendar year, provided, however, that "Eligible Employee"
                  shall not include any person who would be deemed for purposes
                  of Section 423(b)(3) of the Code to own stock possessing 5% or
                  more of the total combined voting power or value of all
                  classes of stock of the Company.

                           (j) Intentionally Omitted

                           (k)  "Fair Market Value" as of any date means:

                                    (i) the closing sale price of a share of
                           Common Stock on the date specified or, if no sale of
                           shares of Common Stock shall have occurred on that
                           date, on the next preceding day on which a sale
                           occurred of shares on the National Association of
                           Securities Dealers Inc. Automated Quotations National
                           Market System ("NMS"), or

                                    (ii) if the shares of Common Stock are not
                           quoted on the NMS, what the Committee determines in
                           good faith to be the fair market value of a share of
                           Common Stock on that date.

                  If such determination of Fair Market Value is not consistent
                  with the then current regulations of the Secretary of the
                  Treasury applicable to plans intended to qualify as an
                  "employee stock purchase plan" within the meaning of Section
                  423(b) of the Code, Fair Market Value shall be determined in
                  accordance with said regulations. The determination of Fair
                  Market Value shall be subject to adjustment as provided in
                  Section 14 hereof.

                           (l) "Participant" means an Eligible Employee who has
                  elected to participate in the Plan in the manner set forth in
                  Section 4.

                           (m) "Plan" means this 1992 Employee Stock Purchase
                  Plan.

                           (n) "Purchase Period" through November 30, 2001,
                  means each six-month period ending on November 30 and May 31;
                  and commencing December 1, 2001, means the period from
                  December 1, 2001 and ending June 30, 2002; and thereafter,
                  each six month period ending on June 30 and December 31 during
                  the remainder of the term of this Plan.

                           (o) "Stock Purchase Account" means the account
                  maintained in the books and records of the Company recording
                  the amount withheld from each Participant through payroll
                  deductions made under the Plan.

         3. Scope of the Plan. Options to purchase shares of Common Stock may be
granted by the Company to Eligible Employees during the period commencing July
1, 1992 and ending June 30, 2012 as hereinafter provided, but not more than
1,100,000 shares of Common Stock (1,500,000 shares of Common Stock, effective
October 30, 2001, but subject to shareholder approval at the next scheduled
shareholder meeting) shall be purchased pursuant to such options. Shares shall
be subject to adjustment as provided in Section 14 hereof. Provided, however,
that if shareholder approval is not obtained for the increase in the number of
shares available for issuance under the Plan from 1,100,000 to 1,500,000, then
in the final Purchase Period for which Common Stock is available for purchase
under the Plan the shares then available (determined without regard to the
increase in available shares) shall be allocated among the Participants pro-rata
based on the relative amount of contributions made by each during the Purchase
Period, with any amount not used to purchase Common Stock refunded to the
Participant in cash. All options granted pursuant to this Plan shall be subject
to the same terms, conditions, rights, and privileges. The shares of Common
Stock delivered by the Company pursuant to this Plan may be acquired shares
having the status of authorized but unissued shares, newly issued shares, or
both.

         4. Eligibility and Participation. To be eligible to participate in this
Plan for a given Purchase Period, an employee must be an Eligible Employee on
the first day of such Purchase Period. An Eligible Employee may elect to
participate in the Plan by filing an enrollment form with the Committee in
advance of the Purchase Period that authorizes regular payroll deductions from
Compensation beginning with the first payday in the Purchase Period and
continuing until the Eligible Employee withdraws from the Plan or ceases to be
an Eligible Employee.

         5. Amount of Common Stock Each Eligible Employee May Purchase.

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                  5.1 Subject to the provisions of this Plan, each Eligible
         Employee shall be offered the option to purchase on the last day of the
         Purchase Period the largest number of whole shares of Common Stock that
         can be purchased at the price specified in Section 5.2 hereof with the
         entire credit balance in the Participant's Stock Purchase Account:
         provided however, that no more than the lesser of (i) 2,500 shares of
         Common Stock and other stock for each Purchase Period or (ii) $25,000
         in Fair Market Value (determined at the beginning of each Purchase
         Period) of shares of Common Stock and other stock may be purchased
         under this Plan and all other employee stock purchase plans (if any) of
         the Company and the Affiliates by any Participant for each calendar
         year. If the purchases by all Participants would otherwise cause the
         aggregate number of shares of Common Stock to be sold under the Plan to
         exceed the number specified in Section 3 hereof, however, each
         Participant shall be allocated a ratable portion of the maximum number
         of shares of Common Stock which may be sold.

                  5.2 The purchase price of each share of Common Stock sold
         pursuant to this Plan will be the lesser of (i) 85% of the Fair Market
         Value of such share on the first business day of the Purchase Period or
         (ii) 85% of the Fair Market Value of such share on the last business
         day of the Purchase Period.

         6. Method of Participation.

                  6.1 The Committee shall give notice to Eligible Employees of
         each offering of options to purchase shares of Common Stock pursuant to
         this Plan and the terms and conditions for each offering. Such notice
         is subject to revision by the Company at any time prior to the date of
         grant of the option. The first day of a Purchase Period is the date
         contemplated by the Company as the date of grant of the option to
         purchase such shares.

                  6.2 Each Eligible Employee who desires to participate in the
         Plan for a Purchase Period shall signify his or her election to do so
         by signing an election form developed by the Committee. An Eligible
         Employee may elect withholding from Compensation in any whole
         percentage from 0% to 10%. Notwithstanding the foregoing, a Participant
         may not withhold more than $5,000 in the aggregate during each Purchase
         Period. An election to participate in the Plan and to authorize payroll
         deductions as described herein must be made before the commencement of
         the Purchase Period to which it relates and shall remain in effect
         unless and until such Participant withdraws from this Plan, modifies
         his or her authorization, or terminates his or her employment with the
         Company as hereinafter provided.

                  6.3 Any Eligible Employee who does not make a timely election
         as provided in Section 6.2 hereof shall be deemed to have elected not
         to participate in the Plan. Such election shall be irrevocable for such
         Purchase Period.

         7. Stock Purchase Account.

                  7. 1 The Company shall maintain a Stock Purchase Account for
         each Participant. Payroll deductions pursuant to Section 6 hereof will
         be credited to such Stock Purchase Accounts on each payday.

                  7.2 No interest will be credited to a Participant's Stock
         Purchase Account.

                  7.3 The Stock Purchase Account is established solely for
         accounting purposes, and all amounts credited to the Stock Purchase
         Account will remain part of the general assets of the Company.

                  7.4 A Participant may not make any separate cash payment into
         his or her Stock Purchase Account.

         8. Right to Reduce Participation or to Withdraw.

                  8.1 A Participant may, at any time during a Purchase Period,
         direct the Company to make no further deductions from his or her
         Compensation or to reduce the amount of such deductions. Upon either of
         such actions, future payroll deductions with respect to such
         Participant shall cease or be reduced in accordance with the
         Participant's direction.

                  8.2 Any Participant who stops payroll deductions may not
         thereafter resume payroll deductions for the Purchase Period, and any
         Participant who decreases payroll deductions may not thereafter further
         decrease or increase such deductions, except that he or she may stop
         further deductions.

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                  8.3 At any time before the end of a Purchase Period, any
         Participant may also withdraw from the Plan. In such event, all future
         payroll deductions shall cease and the entire credit balance in the
         Participant's Stock Purchase Account will be paid to the Participant,
         without interest, in cash within 60 days. A Participant who withdraws
         from the Plan will not be eligible to reenter the Plan until the next
         succeeding Purchase Period.

                  8.4 Notification of a Participant's election to reduce or
         terminate deductions, or to withdraw from the Plan, shall be made by
         the filing of an appropriate notice to such effect with the Committee.

         9. Termination of Employment.

                  9.1 If the employment of a Participant is terminated prior to
         conclusion of the Purchase Period because of death, permanent
         disability, or retirement at or after age 65, or earlier with the
         consent of the Committee, the Participant or his or her legal
         representative, as applicable, may either:

                           (a) withdraw from the Plan, in which event the
                  Company shall refund in cash the entire balance in the
                  Participant's Stock Purchase Account; or

                           (b) elect to receive a distribution of only a portion
                  of his or her Stock Purchase Account, in which event the
                  Company shall refund such portion in cash and shall leave the
                  balance of the Stock Purchase Account to be applied at the end
                  of the Purchase Period towards the acquisition of shares of
                  Common Stock as provided in Section 10 hereof.

                  9.2 The election of a Participant or his or her legal
         representative, as applicable, pursuant to Section 9.1 shall be made
         within three months of the event causing the termination of employment,
         but not (except in the case of death) later than the conclusion of the
         Purchase Period. Notification of the election shall be filed with the
         Committee and, in the event no notification has been filed within the
         prescribed period, the Participant shall be deemed to have elected to
         withdraw from the Plan in accordance with Section 9.l(a) hereof.

                  9.3 If the employment of a Participant is terminated for any
         reason other than those specified in Section 9.1 hereof, the Company
         shall refund in cash all amounts credited to his or her Stock Purchase
         Account.

         10. Exercise of Option and Purchase of Shares.

                  10.1 As of the last day of the Purchase Period, the entire
         credit balance in each Participant's Stock Purchase Account will be
         used to purchase the largest number of whole shares of Common Stock
         purchasable with such amount (subject to the limitations of Section 5
         hereof) unless the Participant has filed an appropriate form with the
         Committee in advance of that date (which either elects to purchase a
         specified number of whole shares which is less than the number
         described above or elects to receive the entire credit balance in
         cash).

                  10.2 Any amount remaining in a Participant's Stock Purchase
         Account after such purchase (or the entire credit balance if the
         Participant elected not to purchase any shares) will be paid to the
         Participant in cash within 60 days after the end of the Purchase
         Period.

                  10.3 As soon as practicable after the close of the Purchase
         Period, certificates for the number of whole shares of Common Stock,
         determined as aforesaid, purchased by each Participant shall be issued
         and delivered to him or her.

         11. Rights as a Stockholder. A Participant shall not be entitled to any
of the rights or privileges of a stockholder of the Company with respect to such
shares, including the right to receive any dividends which may be declared by
the Company, until he or she actually has paid the purchase price for such
shares and certificates have been issued to him or her in accordance with
Section 10.

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         12. Rights Not Transferable. A Participant's rights under this Plan are
exercisable only by the Participant during his or her lifetime, and may not be
sold, pledged, assigned, or transferred in any manner other than by will or the
laws of descent and distribution. Any attempt to sell, pledge, assign, or
transfer the same shall be null and void and without effect. The amounts
credited to a Stock Purchase Account may not be assigned, transferred, pledged,
or hypothecated in any way, and any attempted assignment, transfer, pledge,
hypothecation, or other disposition of such amounts will be null and void and
without effect.

         13.  Administration of the Plan.

                  13.1 This Plan shall be administered by the Committee, which
         is authorized to make such uniform rules as may be necessary to carry
         out its provisions. The Committee shall determine any questions arising
         in the administration, interpretation, and application of this Plan,
         and all such determinations shall be conclusive and binding on all
         parties.

                  13.2 If any option granted under this Plan shall lapse or
         terminate unexercised, the number of shares of Common Stock covered
         thereby shall again become available for sale under this Plan.

         14. Adjustment Upon Changes in Capitalization. In the event or any
change in the Common Stock of the Company by reason of stock dividends, stock
splits, corporate separations, recapitalizations, mergers, consolidations,
combinations, exchanges of shares, and the like, the aggregate number and class
of shares available under this Plan and the number, class, and purchase price of
shares under option but not yet purchased under this Plan, shall be adjusted
appropriately by the Committee.

         15. Registration of Certificate. Stock certificates will be registered
in the name of the Participant, or jointly in the name of the Participant and
another person, as the Participant may direct on an appropriate form.

         16. Amendment of Plan. The Board of Directors may at any time amend
this Plan in any respect which shall not adversely affect the rights of
Participants pursuant to options accepted under this Plan, except that, without
stockholder approval on the same basis as required by Section 19.1, no amendment
shall be made (i) to increase the number of shares to be reserved under this
Plan, (ii) to decrease the minimum purchase price, (iii) to withdraw the
administration of this Plan from the Committee, or (iv) to change the definition
of employees eligible to participate in the Plan.

         17. Effective Date of Plan. This Plan shall consist of an offering
commencing July 1, 1992 and ending May 31, 1993 and thereafter 4 consecutive
annual offerings beginning on June 1 of each year and ending on May 31 of the
subsequent year; and commencing June 1, 1997 and ending November 30, 2001, 9
consecutive six-month offerings beginning on June 1 and December 1; and
commencing December 1, 2001 and ending June 30, 2002, a seven month offering
period; and thereafter, 20 consecutive six month periods ending on December 31
and June 30 during the remainder of the term of this Plan. All rights of
Participants in any offering hereunder shall terminate at the earlier of the
conclusion of the last Purchase Period authorized herein on June 30, 2012 or:

                  17.1 On the day that Participants become entitled to purchase
         a number of shares of Common Stock equal to or greater than the number
         of shares remaining available for purchase;

                  17.2 At any time, at the discretion of the Board of Directors,
         after 30 days' notice has been given to all Participants.

Upon termination of this Plan, shares of Common Stock in accordance with Section
10 shall be issued to Participants, and cash, if any, remaining in the
Participants' Stock Purchase Accounts shall be refunded to them, as if the Plan
were terminated at the end of a Purchase Period.

         18. Governmental Regulations and Listing. All rights granted or to be
granted to Eligible Employees under this Plan are expressly subject to all
applicable laws and regulations and to the approval of all governmental
authorities required in connection with the authorization, issuance, sale, or
transfer of the shares of Common Stock reserved for this Plan, including,
without limitation, there being a current registration statement of the Company
under the Securities Act of 1933 as amended, covering the shares of Common Stock
purchasable under options on the last day of the Purchase Period applicable to
such options, and if such a registration statement shall not then be effective,
the term of such options and the Purchase Period shall be extended until the
first business day after the effective date of such a registration statement, or
post-effective amendment thereto. If applicable, all such rights hereunder are
also similarly subject to effectiveness of an appropriate listing application to
the National Association of Securities Dealers, Inc. covering the shares of
Common Stock under the Plan upon official notice of issuance.

                                       5
<PAGE>
         19. Miscellaneous.

                  19.1 This Plan shall be submitted for approval by the
         stockholders of the Company prior to May 31, 1992. If not so approved
         prior to such date, this Plan shall terminate on June 1, 1992.

                  19.2 This Plan shall not be deemed to constitute a contract of
         employment between the Company and Participant, nor shall it interfere
         with the right of the Company to terminate any Participant and treat
         him or her without regard to the effect which such treatment might have
         upon him or her under this Plan.

                  19.3 Wherever appropriate as used herein, the masculine gender
         may be read as the feminine gender, the feminine gender may be read as
         the masculine gender, the singular may be read as the plural, and the
         plural may be read as the singular.

                  19.4 This Plan, and all agreements hereunder, shall be
         construed in accordance with and governed by the laws of the State of
         Minnesota.

                  19.5 Delivery of shares of Common Stock or of cash pursuant to
         this Plan shall be subject to any required withholding taxes. A person
         entitled to receive shares of Common Stock may, as a condition
         precedent to receiving such shares, be required to pay the Company a
         cash amount equal to the amount of any required withholdings.

                                       6

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