Document:

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                                                                     Exhibit 4.6

                             EQUINOX SYSTEMS INC.

                      1992 NON-QUALIFIED STOCK OPTION PLAN
                      ------------------------------------
                               Amended 12/20/2000
                               ------------------

   1.   Purpose.  The purpose of this Non-Qualified Stock Option Plan (the
        --------
"Plan") is to further the best interests of EQUINOX SYSTEMS INC. and any of its
future subsidiaries (the "Company") by encouraging directors, officers and
employees of the Company and other individuals or entities having or
contemplating a business relationship with the Company ("Business Related
Party") to acquire a proprietary stake in the Company and its future growth.  It
is the view of the Company that it may achieve this goal by granting stock
options.

   2.   Option Shares.  150,000 shares of the Common Stock of the Company, par
        --------------
value $.01 per share (the "Stock"), are hereby reserved for issuance upon the
exercise of the stock options granted under the Plan (the "Options").  The Stock
may be issued pursuant to such Options either from the Company's authorized but
unissued Stock or from the Company's issued but not outstanding Stock (treasury
stock).  Should any Options granted hereunder not be exercised in the time
allowed for such exercise, the share of Stock relating to such lapsed Options
shall be available for issuance pursuant to Options subsequently granted under
the Plan.

   3.   Administration of this Plan.  This Plan shall be administered by the
        ----------------------------
Board of Directors of the Company (the "Board").  The Board may authorize any
appropriate committee thereof to exercise any and all of the powers and
functions of the Board pursuant to this Plan as described herein.

   Subject to the provisions of the Plan, the Board shall have authority to (i)
adopt, amend and rescind its rules, regulations and procedures as it deems
advisable in the administration of the Plan; (ii) construe and interpret the
Plan; and (iii) make all other determinations deemed necessary or advisable for
the administration of the Plan.  All decisions, determinations and
interpretations of the Board shall be final, conclusive and binding on all
persons holding an Option granted pursuant to the Plan ("Optionees").

   Neither the Board nor any member thereof shall be liable for any action or
determination taken or made in good faith with respect to the Plan or any Option
granted thereunder.

   4.   Eligibility.  All directors, officers and employees of the Company and
        ------------
any other Business Related Party designated by the Board shall be eligible to
receive Options under the Plan.

   5.   Grant of Options.  In making its selection of those eligible to receive
        -----------------
Options and determining the number of shares to be granted pursuant to each
Option, the Board may consider any factors that it may, in its sole discretion,
deem relevant.  Each
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            1992 Non-Qualified Stock Option Plan - Amended 12/20/2000

grant of an Option pursuant to this Plan shall be made within ten (10) years
from the date of adoption of this Plan by the Board, February 28, 1992, (the
"Adoption Date"). Each grant of an Option pursuant to this Plan shall be made
upon such terms and conditions as may be determined by the Board at the time of
grant, subject to the terms, conditions and limitations set forth in this Plan.

   6.   Option Price.  The purchase price per share of Stock placed under an
        -------------
Option pursuant to this Plan (the "Option Price") shall be determined by the
Board, but in no event may such price be below the fair market value of such
Stock on the business day immediately preceding the date of the grant.  The
board shall determine or adopt rules to determine such fair market value.

   7.   Duration of Option.  An Option granted hereunder shall be effective
        -------------------
(hereinafter called the "Option Period") upon the date it is granted, and shall
continue until the earlier of (i) a date set by the Board at the time of grant;
or (ii) ten (10) years from the date of its grant.

   8.   Transferability of Options.  Each Option may be transferred by the
        --------------------------
Optionee to or among such Optionee's Family Group (as hereinafter defined) or by
will or the laws of descent and distribution. As used herein, "Family Group"
means an Optionee's spouse and lineal descendants, parents, grandparents and any
family limited partnership or trust or other fiduciary relationship solely for
the benefit of such Optionee and or such Optionee's spouse, parents,
grandparents and/or lineal descendants.

   9.   Termination of the Plan.  This Plan shall terminate upon the close of
        ------------------------
business on February 28, 2002, (ten (10) years from the Adoption Date) unless it
shall have been sooner terminated by reason of there having been granted and
fully exercised Options covering the entire 150,000 shares of Stock subject to
this Plan.  Upon such termination, no further Options may be granted hereunder.
If, after termination of this Plan as provided above, there are outstanding
Options which have not been fully exercised, such Options shall remain in effect
in accordance with their terms and shall remain subject to the terms of this
Plan.

   10.  Exercise of Options.   An Option granted pursuant to this Plan shall be
        --------------------
exercisable at any time within the Option Period, subject to the terms and
conditions of such Option.  Exercise of any Option shall be made by the
delivery, during the period that such Option is exercisable, to the Company, in
person or by mail, of (i) written notice from the Optionee stating that the
Optionee is exercising such Option; and (ii) the payment of the aggregate
purchase price of all shares as to which such Option is then exercised and the
payment of any required federal income tax withholding.  Such aggregate
purchase price shall be paid to the Company in cash, Stock or any other class of
equity securities (such Stock and other class of equity securities of the
Company are hereinafter collectively referred tos the "Company Stock"), or in a
combination of cash or Company Stock at the time of exercise.  Additionally, the
Board, in its discretion may accept a full recourse promissory note from an
Optionee as part or full payment of the purchase price of

                                     Page 2
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            1992 Non-Qualified Stock Option Plan - Amended 12/20/2000

any Option. The terms and conditions of any such promissory note shall be
determined by the Board in its sole discretion.

   There may not, however, be any payment by an Optionee of the exercise price
in whole or in part with shares of Company Stock at a time when the Company is
Insolvent (as hereafter defined) or when such payment would make the Company
Insolvent, or as such payment may otherwise be prohibited by any applicable
state or Federal statute, rule or regulation, or any rule or regulation of any
stock exchange upon which Company Stock is traded, or if Company Stock is traded
on a recognized stock quotation service, which may be the National Association
of Securities Dealers Automated Quotations System ("NASDAQ"), any rule or
regulation of NASDAQ.  For the purposes of this Plan, "Insolvent" shall mean the
inability of the Company to pay its debts as they become due in the usual course
of its business.  Company Stock utilized in full or partial payment of the
exercise price shall be valued at fair market value on the date of exercise of
the Option.  The Board shall determine or enact rules to determine the fair
market value of any Company Stock.

   Notwithstanding anything to the contrary contained herein, no written notice
shall be effective under this Section 10 unless it requests the exercise of
Options for one hundred (100) shares or an integral multiple thereof; except to
the extent necessary to make full exercise of the Options in the event that only
an odd lot remains.  Upon the exercise of an Option in compliance with the
provisions of this Section, and upon the receipt by the Company of the payment
for the Stock so taken up, the Company shall (i) deliver or cause to be
delivered to the Optionee so exercising his Option a certificate or certificates
for the number of shares of Stock with respect to which the Option is so
exercised and payment is so made; and (ii) register or cause such shares to be
registered in the name of the exercising Optionee.

   The Board may impose additional conditions upon the right of an Optionee to
exercise an Option granted hereunder if such conditions are not inconsistent
with the terms of this Plan.

   Upon exercise of an Option, the Board may permit the issuance of Stock prior
to its full payment if satisfactory arrangements are made for its prompt sale
and for an escrow or similar arrangement with a financial institution or
brokerage house for payment to the Company of the full purchase price of the
Option.

   The Board may authorize the Company to repurchase a previously granted stock
option from an Optionee by mutual agreement with such Optionee before such
Option has been exercised, by payment to the Optionee an amount equal to the
positive difference between the current fair market value of the Stock and the
Optionee's Option exercise price.  This condition under no circumstances creates
any obligation by the Company to repurchase Options or Stock of an Optionee.

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            1992 Non-Qualified Stock Option Plan - Amended 12/20/2000

   11.  Controlling Terms.  Options granted pursuant hereto may include
        ------------------
conditions that are more (but not less) restrictive to the Optionee than the
conditions contained herein and, in such event, the more restrictive conditions
shall apply.

   12.  Purchase of Stock for Investment.  Unless the Options and shares covered
        ---------------------------------
by the Plan have been registered under the Securities Act of 1933, as amended
(the "Securities Act"), pursuant to a registration statement filed with the
Securities and Exchange Commission and any other applicable regulatory agency,
or the Company has determined that such registration is unnecessary, each
Optionee exercising an Option under the Plan may be required by the Company (i)
to give a representation in writing that such shares are being acquired for the
Optionee's own account and not for the account or beneficial interest of any
other person or entity, and that such shares of Stock shall be acquired for the
Optionee's own investment and not with a view to or for resale in connection
with the distribution of all or any part thereof; (ii) to represent and
acknowledge that he is a sophisticated investor by virtue of his education,
learning and other investments and that he is knowledgeable and experienced in
business and financial matters and with respect to the business of the Company,
in particular; (iii) to represent and acknowledge that he has been furnished or
has otherwise obtained all information necessary to enable him to evaluate the
merits and risks of an investment in the shares of Stock and that he has had
access to any and all information he desires to enable him to evaluate the risks
and merits of an investment in the shares of Stock; and (iv) to covenant and
agree to restrictions governing the time and circumstances of disposition of the
shares of Stock being acquired by such exercise.  In the event that the Company
requires any such representation or covenant, any shares of Stock so acquired
will bear an appropriate legend to signify the restrictions on such shares under
the applicable securities laws and that "stop-transfer" instructions will be
given to the Company's registrar and transfer agent.  To the extent necessary to
comply with the securities laws, regulations or orders of the United States or
any state, the Board may, as a condition precedent to the exercise of an Option,
require the Optionee (or the legal representatives, legatees or distributees, in
the event of the Optionee's death or disability) to covenant and agree to any
other restrictions which the Board believes to be necessary or advisable to
comply with any such laws, regulations or orders, including but not limited to
restrictions governing the time and circumstances of disposition of the shares
being acquired by exercise of such Option.

   13.  Requirements of Law.  If any law, regulation or order of the United
        --------------------
States Securities and Exchange Commission, or of any other commission or agency
having jurisdiction, shall require the Company or the exercising Optionee to
take any action with respect to the shares of Stock acquired by the exercise of
any Option, then the date upon which the Company shall deliver or cause to be
delivered the certificate or certificates for the shares of Stock shall be
postponed until full compliance has been made with all such requirements of law
or regulation.  Further, in the event that the Company shall determine that, in
compliance with the Securities Act or any other applicable statute or
regulation, it is necessary to register any of the shares of Stock with respect
to which an exercise of an Option has been made, or to qualify any such shares
for exemption from any of the requirements of the Securities Act or such other
applicable statute or regulations, then the Company shall take such action at
its own expense, but not until such an action has been

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            1992 Non-Qualified Stock Option Plan - Amended 12/20/2000

completed shall the Option shares be delivered to the exercising Optionee.
Further, in the event that at the time of exercise of the Option the shares of
Stock shall be listed on any stock exchange, then if required by law or the
exchange to do so, the Company shall register the Option shares of Stock with
respect to which exercise is so made in accordance with the provisions of the
Securities Act, any other applicable law or regulation or any rules or
regulations of any such exchange, and the Company shall make prompt application
for the listing of Option shares on such exchange at the expense of the Company.

   14.  No Exchange Act Registration Obligation.  Notwithstanding any other
        ----------------------------------------
provision contained herein, the Company shall have no obligation to be
registered under the Securities and Exchange Act of 1934 (the "Exchange Act"),
to continue any such registration or to be current in its reporting obligations
under the Exchange Act.

   15.  No Rights Conferred Upon Granting of Options.  The Optionee shall not
        ---------------------------------------------
have any rights as a shareholder of the Company with respect to any shares of
Stock prior to the date of issuance to the Optionee of the certificate or
certificates for such shares.  Neither the Plan nor the Option confer on the
Optionee any right to be employed by the Company.

   16.  Adjustments.  In the event of any reorganization, merger, consolidation,
        ------------
acquisition, separation, recapitalization, split-up, combination, exchange of
shares or stock dividend of the Stock or shares convertible into the Stock or
similar corporate action, the number and class of shares of Stock available
pursuant to this Plan and any Options granted pursuant to this Plan, together
with the Option Prices, shall be adjusted by appropriate modifications in this
Plan and in any Options outstanding pursuant to this Plan.  Any such adjustment
to the Plan or to Options or Option Prices shall be made by notice of the Board,
whose determination shall be conclusive.

   17.  Amendment or Discontinuance of this Plan.  The Board may amend, suspend
        -----------------------------------------
or discontinue this Plan at any time without restriction; provided, however,
that the Board may not alter or  amend or discontinue or revoke or otherwise
impair any outstanding Options that have been granted pursuant to this Plan and
remain unexercised, except as provided in Section 16 above, or except in the
event that there is secured the written consent of the holder of the outstanding
Option proposed to be so altered or amended.  Nothing contained in this Section,
however, shall in any way extend the Option Period of any outstanding Option by
an amendment, suspension or discontinuance of the Plan.

   In addition, notwithstanding any other provision in the Plan, in the event of
a change in any Federal or state law or regulation which would make the exercise
of all or part of an existing Option unlawful or subject the Company to a
penalty, the Board may restrict such exercise without the consent of the
Optionee or other holder thereof in order to comply with such law or regulation
or to avoid such penalty.

   18.  Liquidation of the Company.  In the event of the complete liquidation or
        ---------------------------
dissolution of the Company, other than as an incident to a merger,
reorganization or other

                                     Page 5
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            1992 Non-Qualified Stock Option Plan - Amended 12/20/2000

adjustment referred to in Section 16 above, any Options granted pursuant to this
Plan and remaining unexercised shall be deemed cancelled without regard to or
without being limited by any other provisions of this Plan.

   19.  Unsecured Obligation.  Optionees shall not have any interest in any fund
        ---------------------
or special asset of the Company by reason of the Plan.  No trust fund shall be
created in connection with the Plan or any award thereunder, and there shall be
no required funding of amounts which may become payable to any Optionee.

   20.  Governing Law.  The Plan shall be governed by, construed and enforced in
        --------------
accordance with the laws of the State of Florida.

   21.  Compliance with Rule 16b-3.  It is the intent of the Board that all
        ---------------------------
Options granted hereunder comply with the applicable provisions of Rule 16b-3 of
the Securities and Exchange Commission as presently in effect and as amended
from time to time.  Therefore, this Plan may be amended in any manner deemed by
the Board necessary or desirable to meet any provision or condition of Rule 16b-
3.  Additionally, the Board shall grant all Options in such a manner as to
comply with the applicable requirements of Rule 16b-3.

   22.  Approval.  This Plan shall be adopted by the Board and approved by a
        ---------
majority of the shareholders of the Company.

                                     Page 6
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            1992 Non-Qualified Stock Option Plan - Amended 12/20/2000

                              EQUINOX SYSTEMS INC.

                               SUPPLEMENT TO THE

                      1992 NON-QUALIFIED STOCK OPTION PLAN

     In accordance with their authority under paragraph three of the 1992 Non-
Qualified Stock Option Plan (the "Plan"), the Board of Directors has adopted the
following supplemental provisions to the Plan, which shall be considered an
integral part thereof.

(1)  Grant of Option(s)

     Options granted under the Plan shall be made by written agreement
consistent with the terms of this Plan, signed by an officer of the Company and
ratified by the Board of Directors.

(2)  Option Period

     Options granted to an individual ("Optionee") who is an employee or
Director of the Company must be exercised by that Optionee within three (3)
months of termination of employment or service or until the expiration of the
option, whichever date is the earlier. In the event that an Optionee under this
plan shall die, the options granted to such Optionee which have not been
exercised at the time of death and were exercisable at such time of death shall
be exercisable by the estate of such Optionee or by any person or entity
acquiring such options by bequest or inheritance from the Optionee for a period
up to one (1) year after the Optionee's death or expiration of the option,
whichever date is earlier.

                                     Page 7<PAGE>

                                                                     Exhibit 4.7

                             EQUINOX SYSTEMS INC.
              __________________________________________________

                 1993 STOCK OPTION PLAN, AS AMENDED 12/20/2000
              __________________________________________________

1.   Purpose. The purpose of this Plan is to advance the interests of EQUINOX
     --------
SYSTEMS INC., a Florida corporation (the "Company"), by providing an additional
incentive to attract and retain qualified and competent persons who are key
employees of the Company, and upon whose efforts and judgment the success of the
Company is largely dependent, through the encouragement of stock ownership in
the Company by such persons.

2.   Definitions. As used herein, the following terms shall have the meaning
     ------------
indicated:

       (a)  "Board" shall mean the Board of Directors of the Company.

       (b)  "Committee" shall mean the stock option committee appointed by the
            Board pursuant to Section 13 hereof or, if not appointed, the Board.

       (c)  "Common Stock" shall mean the Company's Common Stock, par value
            $0.01 per share.

       (d)  "Director" shall mean a member of the Board.

       (e)  "Disinterested Person" shall mean a Director who is not, during the
            one year prior to his or her service as an administrator of this
            Plan, or during such service, granted or awarded equity securities
            pursuant to this Plan or any other plan of the Company or any of its
            affiliates, except that:

            (i)   participation in a formula plan meeting the conditions in
                  paragraph (c)(2)(ii) of Rule 16b-3 promulgated under the
                  Securities Exchange Act shall not disqualify a Director from
                  being a Disinterested Person; and

            (ii)  participation in an ongoing securities acquisition plan
                  meeting the conditions in paragraph (d)(2)(i) of Rule 16b-3
                  promulgated under the Securities Exchange Act shall not
                  disqualify a Director from being a Disinterested Person; and

            (iii) an election to receive an annual retainer fee in either cash
                  or an equivalent amount of securities, or partly in cash and
                  partly in securities, shall not disqualify a director from
                  being a Disinterested Person.

       (f)  "Fair Market Value" of a Share on any date of reference shall be the
            "Closing Price" (as defined below) of the Common Stock on the
            business day immediately preceding such date, unless the Committee
            in its sole discretion shall determine otherwise in a fair and
            uniform manner. For the purpose of determining Fair Market Value,
            the "Closing Price" of the Common Stock on any business day shall be

            (i)   if the common Stock is listed or admitted for trading on any
                  United States national securities exchange, or if actual
                  transaction are otherwise reported on a consolidated
                  transaction reporting system, the last reported sale price of
                  Common Stock on such exchange or reporting system, as reported
                  in any newspaper of general circulation,
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                 1993 STOCK OPTION PLAN, AS AMENDED 12/20/2000

            (ii)  if the Common Stock is quoted on the National Association of
                  Securities Dealers Automated Quotations System ("NASDAQ"), or
                  any similar system of automated dissemination of quotations of
                  securities prices in common use, the mean between the closing
                  high bid and low asked quotations for such day of Common Stock
                  on such system, or

            (iii) if neither clause (i) or (ii) is applicable, the mean between
                  the high bid and low asked quotations for the Common Stock as
                  reported by the National Quotation Bureau, Incorporated if at
                  least two securities dealers have inserted both bid and asked
                  quotations for common Stock on at least five of the ten
                  preceding days.

       (g)  "Incentive Stock Option" shall mean an incentive stock option as
            defined in Section 422 of the Internal Revenue Code.

       (h)  "Internal Revenue Code" shall mean the Internal Revenue Code of
            1986, as amended from time to time.

       (i)  "Non-Statutory Stock Option" shall mean an Option which is not an
            Incentive Stock Option.

       (j)  "Officer" shall mean the Company's president, principal financial
            officer, principal accounting officer and any other person who the
            Company identifies as an "executive officer" for purposes of reports
            or proxy materials filed by the Company pursuant to the Securities
            Exchange Act.

       (k)  "Option" (when capitalized) shall mean any option granted under this
            Plan.

       (l)  "Optionee" shall mean a person to whom a stock option is granted
            under this Plan or any person who succeeds to the rights of such
            person under this Plan by reason of the death of such person.

       (m)  "Plan" shall mean this Stock Option Plan for the Company.

       (n)  "Securities Exchange Act" shall mean the Securities Exchange Act of
            1934, as amended.

       (o)  "Share(s)" shall mean a share or shares of the Common Stock.

3.   Shares and Options. The Company may grant to Optionees from time to time
     ------------------
     Options to purchase an aggregate of up to Two Million Two Hundred and
     Seventy Five Thousand (2,275,000) Shares from Shares held in the Company's
     treasury or from authorized and unissued Shares. If any Option granted
     under the Plan shall terminate, expire, or be canceled or surrendered as to
     any Shares, new Options may thereafter be granted covering such Shares. An
     Option granted hereunder shall be either an Incentive Stock Option or a
     Non-Statutory Stock Option as determined by the Committee at the time of
     grant of such Option and shall clearly state whether it is an Incentive
     Stock Option or Non-Statutory Stock Option. All Incentive Stock Options
     shall be granted within 10 years from the effective date of this Plan.

4.   Dollar Limitation. Options otherwise qualifying as Incentive Stock Options
     -----------------
     hereunder will not be treated as Incentive Stock Options only to the extent
     that the aggregate fair market value (determined at the time the Option is
     granted) of the Shares, with respect to which Options meeting the
     requirements of Internal Revenue Code Section 422(b) are exercisable for
     the first time by an individual during any calendar year (under all plans
     of the Company), exceeds $100,000. Notwithstanding any other provision of
     this Plan, no Plan participant may be granted options for more than 40% of
     the aggregate number of shares available under the Plan.

5.   Conditions for Grant of Options
     -------------------------------

     (a)  Each Option shall be evidenced by an option agreement that may contain
          any term deemed necessary or desirable by the Committee, provided such
          terms are not inconsistent with this Plan or any applicable law.
          Optionees shall be those persons selected by the Committee from the
          class of all regular employees of the

                                     Page 2
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                 1993 STOCK OPTION PLAN, AS AMENDED 12/20/2000

          Company, including employees who are also Directors or Officers. Any
          person who files with the Committee, in a form satisfactory to the
          Committee, a written waiver of eligibility to receive any Option under
          this Plan shall not be eligible to receive any Option under this Plan
          for the duration of such waiver.

     (b)  In granting Options, the Committee may take into consideration the
          contribution the person has made to the success of the Company and
          such other factors as the Committee shall determine. The Committee
          shall also have the authority to consult with and receive
          recommendations from officers and other personnel of the Company with
          regard to these matters. The Committee may from time to time in
          granting Options under the Plan prescribe such other terms and
          conditions concerning such Options as it deems appropriate, including,
          without limitation,

          (i)   prescribing the date or dates on which the Option becomes
                exercisable,

          (ii)  providing that the Option rights accrue or become exercisable in
                installments over a period of years, or upon the attainment of
                stated goals or both, or

          (iii) relating an Option to the continued employment of the Optionee
                for a specified period of time, provided that such terms and
                conditions are not more favorable to an Optionee than those
                expressly permitted herein.

     (c)  The Options granted to employees under this Plan shall be in addition
          to regular salaries, pension, life insurance or other benefits related
          to their employment with the Company. Neither the Plan nor any Option
          granted under the Plan shall confer upon any person any right to
          employment or continuance of employment by the Company.

     (d)  Notwithstanding any other provision of this Plan, and in addition to
          any other requirements of this Plan, Options may not be granted to a
          Director or Officer unless the grant of such Options is authorized by,
          and all of the terms of such Options are determined by, a Committee
          that is appointed in accordance with Section 13 of this Plan and all
          of whose members are Disinterested Persons.

6.   Option Price. The option price per Share of any Option shall be any price
     ------------
     determined by the Committee but shall not be less than the par value per
     Share; provided, however, that in no event shall the option price per Share
     of any Incentive Stock Option be less than the Fair Market Value of the
     Shares underlying such Option on the date such Option is granted.

7.   Exercise of Options. An Option shall be deemed exercised when
     -------------------

          (i)   the Company has received written notice of such exercise in
                accordance with the terms of the Option,

          (ii)  full payment of the aggregate option price of the Shares as to
                which the Option is exercised has been made, and

          (iii) arrangements that are satisfactory to the Committee in its sole
                discretion have been made for the Optionee's payment to the
                Company of the amount that is necessary for the Company
                employing the Optionee to withhold in accordance with applicable
                Federal or state tax withholding requirements.

                                     Page 3
<PAGE>

                 1993 STOCK OPTION PLAN, AS AMENDED 12/20/2000

     Unless further limited by the Committee in any Option, the option price of
     any Shares purchased shall be paid in cash, by certified or official bank
     check, by money order, with Shares or by a combination of the above;
     provided further, however, that the Committee in its sole discretion may
     accept a personal check in full or partial payment of any Shares. If the
     exercise price is paid in whole or in part with Shares, the value of the
     Shares surrendered shall be their Fair Market Value on the date the Option
     is exercised. The Company in its sole discretion may, on an individual
     basis or pursuant to a general program established by the Committee in
     connection with this Plan, lend money to an Optionee to exercise all or a
     portion of an Option granted hereunder. If the exercise price is paid in
     whole or part with Optionee's promissory note, such note shall

          (i)   provide for full recourse to the maker,

          (ii)  be collateralized by the pledge of the Shares that the Optionee
                purchases upon exercise of such Option,

          (iii) bear interest at a rate no less than the rate of interest
                payable by the Company to its principal lender, and

          (iv)  contain such other terms as the Committee in its sole discretion
                shall require.

     No Optionee shall be deemed to be a holder of any Shares subject to an
     Option unless and until a stock certificate or certificates for such Shares
     are issued to such person(s) under the terms of this Plan. No adjustment
     shall be made for dividends (ordinary or extraordinary, whether in cash,
     securities or other property) or distributions or other rights for which
     the record date is prior to the date such stock certificate is issued,
     except as expressly provided in Section 10 hereof.

8.   Exercisability of Options. Any option shall become exercisable in such
     -------------------------
     amounts, at such intervals and upon such terms as the Committee shall
     provide in such Option, except as otherwise provided in this Section 8.

     (a)  The expiration date of an Option shall be determined by the Committee
          at the time of grant, but in no event shall an Option be exercisable
          after the expiration of 10 years from the date of grant of the Option.

     (b)  Unless otherwise provided in any Option, each outstanding Option
          granted on or prior to February 24, 1996 shall become immediately
          fully exercisable

          (i)   if there occurs any transaction (which shall include a series of
                transactions occurring within 60 days or occurring pursuant to a
                plan), that has the result that shareholders of the Company
                immediately before such transaction cease to own at least 51
                percent of the voting stock of the Company or of any entity that
                results from the participation of the Company in a
                reorganization, consolidation, merger, liquidation or any other
                form of corporate transaction;

          (ii)  if the shareholders of the Company shall approve a plan of
                merger, consolidation, reorganization, liquidation or
                dissolution in which the Company does not survive (unless the
                approved merger, consolidation, reorganization, liquidation or
                dissolution is subsequently abandoned); or

          (iii) if the shareholders of the Company shall approve a plan for the
                sale, lease, exchange or other disposition of all or
                substantially all the property and assets of the Company (unless
                such plan is subsequently abandoned).

     (c)  The Committee may in its sole discretion accelerate the date on which
          any Option may be exercised and may accelerate the vesting of any
          Shares subject to any Option or previously acquired by the exercise of
          any Option.

     (d)  Options granted to Officers and Directors shall not be exercisable
          until the expiration of a period of at least six months following the
          date of grant.

                                     Page 4
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                 1993 STOCK OPTION PLAN, AS AMENDED 12/20/2000

9.   Termination of Option Period
     ----------------------------

     (a)  The unexercised portion of any Option shall automatically and without
          notice terminate and become null and void at the time of the earliest
          to occur of the following:

          (i)   three months after the date on which the Optionee's employment
                is terminated or, in the case of a Non-Statutory Stock Option,
                and unless the Committee shall otherwise determine in writing in
                its sole discretion, the date on which the Optionee's employment
                is terminated, in either case for any reason other than by
                reason of

                (A) Cause, which, solely for purposes of this Plan, shall mean
                    the termination of the Optionee's employment by reason of
                    the Optionee's wilful misconduct or gross negligence,

                (B) a mental or physical disability as determined by a medical
                    doctor satisfactory to the Committee, or

                (C) death;

          (ii)  immediately upon the termination of the Optionee's employment
                for Cause;

          (iii) one year after the date on which the Optionee's employment is
                terminated by reason of a mental or physical disability (within
                the meaning of Internal Revenue Code Section 22(e)) as
                determined by a medical doctor satisfactory to the Committee; or

          (iv)  (A) twelve months after the date of termination of the
                    Optionee's employment by reason of death of the employee, or

                (B) three months after the date on which the Optionee shall die
                    if such death shall occur during the one year period
                    specified in Subsection 9(a)(iii) hereof.

     (b)  The Committee in its sole discretion may by giving written notice
          ("cancellation notice") cancel, effective upon the date of the
          consummation of any corporate transaction described in Subsections
          8(b)(ii) or(iii) hereof, any Option that remains unexercised on such
          date. Such cancellation notice shall be given a reasonable period of
          time prior to the proposed date of such cancellation and may be given
          either before or after approval of such corporate transaction.

10.  Adjustment of Shares
     --------------------

     (a)  If at any time while the Plan is in effect or unexercised Options are
          outstanding, there shall be any increase or decrease in the number of
          issued and outstanding Shares through the declaration of a stock
          dividend or through any recapitalization resulting in a stock split-
          up, combination or exchange of Shares, then and in such event:

          (i)   appropriate adjustment shall be made in the maximum number of
                Shares available for grant under the Plan, so that the same
                percentage of the Company's issued and outstanding Shares shall
                continue to be subject to being so optioned; and

          (ii)  appropriate adjustment shall be made in the number of Shares and
                the exercise price per Share thereof then subject to any
                outstanding Option, so that the same percentage of the Company's
                issued and outstanding Shares shall remain subject to purchase
                at the same aggregate exercise price.

                                     Page 5
<PAGE>

                 1993 STOCK OPTION PLAN, AS AMENDED 12/20/2000

     (b)  Subject to the specific terms of any Option, the Committee may change
          the terms of Options outstanding under this Plan, with respect to the
          option price or the number of Shares subject to the Options, or both,
          when, in the Committee's sole discretion, such adjustments become
          appropriate by reason of a corporate transaction described in
          Subsections 8(b)(ii) or (iii) hereof.

     (c)  Except as otherwise expressly provided herein, the issuance by the
          Company of shares of its capital stock of any class, or securities
          convertible into shares of capital stock of any class, either in
          connection with direct sale or upon the exercise of rights or warrants
          to subscribe therefor, or upon conversion of shares or obligations of
          the Company convertible into such shares or other securities, shall
          not affect, and no adjustment by reason thereof shall be made with
          respect to the number of or exercise price of Shares then subject to
          outstanding Options granted under the Plan.

     (d)  Without limiting the generality of the foregoing, the existence of
          outstanding Options granted under the Plan shall not affect in any
          manner the right or power of the Company to make, authorize or
          consummate

          (i)   any or all adjustments, recapitalizations, reorganizations or
                other changes in the Company's capital structure or its
                business;

          (ii)  any merger or consolidation of the Company;

          (iii) any issue by the Company of debt securities, or preferred or
                preference stock that would rank above the Shares subject to
                outstanding Options;

          (iv)  the dissolution or liquidation of the Company;

          (v)   any sale, transfer or assignment of all or any part of the
                assets or business of the Company; or

          (vi)  any other corporate act or proceeding, whether of a similar
                character or otherwise.

11.  Transferability of Option. In the case of incentive stock options, such
     -------------------------
Option shall not be transferable by the Optionee otherwise than by will or the
laws of descent and distribution, and each Option shall be exercisable during
the Optionee's lifetime only by the Optionee. In the case of non-qualified stock
options, such Option may be transferred by the Optionee to or among such
Optionee's Family Group (as hereinafter defined) or by will or the laws of
descent and distribution. As used herein, "Family Group" means an Optionee's
spouse and lineal descendants, parents, grandparents and any family limited
partnership or trust or other fiduciary relationship solely for the benefit of
such Optionee and or such Optionee's spouse, parents, grandparents and/or lineal
descendants.

12.  Issuance of Shares. As a condition of any sale or issuance of Shares upon
     -------------------
     exercise of any Option, the Committee may require such agreements or
     undertakings, if any, as the Committee may deem necessary or advisable to
     assure compliance with any such law or regulation including, but not
     limited to, the following:

     (a)  a representation and warranty by the Optionee to the Company, at the
          time any Option is exercised, that he is acquiring the Shares to be
          issued to him for investment and not with a view to, or for sale in
          connection with, the distribution of any such Share and

     (b)  a representation, warranty and/or agreement to be bound by any legends
          that are, in the opinion of the Committee, necessary or appropriate to
          comply with the provisions of any securities law deemed by the
          Committee to be applicable to the issuance of the Shares and are
          endorsed upon the Share certificates.

13.  Administration of the Plan.
     ---------------------------

     (a)  The Plan shall be administered by the Committee, which shall consist
          of not less than two Directors, each of whom shall be Disinterested
          Persons to the extent required by Section 5(d) hereof. The Committee
          shall

                                     Page 6
<PAGE>

                 1993 STOCK OPTION PLAN, AS AMENDED 12/20/2000

          have all of the powers of the Board with respect to the Plan. Any
          member of the Committee may be removed at any time, with or without
          cause, by resolution of the Board and any vacancy occurring in the
          membership of the Committee may be filled by appointment by the Board.

     (b)  The Committee, from time to time, may adopt rules and regulations for
          carrying out the purposes of the Plan. The Committee's determinations
          and its interpretation and construction of any provision of the Plan
          shall be final and conclusive.

     (c)  Any and all decisions or determinations of the Committee shall be made
          either

          (i)   by a majority vote of the members of the Committee at a meeting
                or

          (ii)  without a meeting by the unanimous written approval of the
                members of the Committee.

14.  Incentive Options for 10% Shareholders. Notwithstanding any other
     ---------------------------------------
     provisions of the Plan to the contrary, an Incentive Stock Option shall not
     be granted to any person owning directly or indirectly (through attribution
     under Section 424(d) of the Internal Revenue Code) at the date of grant,
     stock possessing more than 10% of the total combined voting power of all
     classes of stock of the Company (or of its subsidiary [as defined in
     Section 424 of the Internal Revenue Code] at the date of grant) unless the
     option price of such Option is at least 110% of the Fair Market Value of
     the Shares subject to such Option on the date the Option is granted, and
     such Option by its terms is not exercisable after the expiration of five
     years from the date such Option is granted.

15.  Interpretation.
     --------------

     (a)  The Plan shall be administered and interpreted so that all Incentive
          Stock Options granted under the Plan will qualify as Incentive Stock
          Options under Section 422 of the Internal Revenue Code. If any
          provision of the Plan should be held invalid for the granting of
          Incentive Stock Options or illegal for any reason, such determination
          shall not affect the remaining provisions hereof, but instead the Plan
          shall be construed and enforced as if such provision had never been
          included in the Plan.

     (b)  This plan shall be governed by the laws of the State of Florida.

     (c)  Headings contained in this Plan are for convenience only and shall in
          no manner be construed as part of this Plan.

     (d)  Any reference to the masculine, feminine, or neuter gender shall be a
          reference to such other gender as is appropriate.

16.  Amendment and Discontinuation of the Plan. Either the Board or the
     -----------------------------------------
     Committee may from time to time amend the Plan or any Option; provided,
     however, that, except to the extent provided in Section 10, no such
     amendment may, without approval by the shareholders of the Company,

     (a)  materially increase the benefits accruing to participants under the
          Plan,

     (b)  materially increase the number of securities which may be issued under
          the Plan, or

     (c)  materially modify the requirements as to eligibility for participation
          in the Plan; and provided further, that, except to the extent provided
          in Section 9, no amendment or suspension of the Plan or any Option
          issued hereunder shall substantially impair any Option previously
          granted to any Optionee without the consent of such Optionee.

17.  Effective Date and Termination Date.  The effective date of the Plan is the
     -----------------------------------
     date on which the Board adopts this Plan, and the Plan shall terminate on
     the 10th anniversary of the effective date.

                                     Page 7
<PAGE>

                 1993 STOCK OPTION PLAN, AS AMENDED 12/20/2000

                                     Page 8

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