Document:

<PAGE>

                                                                   EXHIBIT 10.21

                 FIRST AMENDMENT AND WAIVER TO CREDIT AGREEMENT
                 ----------------------------------------------

     This FIRST AMENDMENT AND WAIVER TO CREDIT AGREEMENT (this "Amendment"),
dated as of March 30, 2000, is by and among VERDANT BRANDS, INC., a Minnesota
corporation ("Verdant"), SAFER, INC., a Delaware corporation ("Safer"), SURECO,
INC., a Georgia corporation ("SureCo"), CONSEP, INC., an Oregon corporation
("Consep"), RICHARD HUNT INC., a California corporation ("Hunt"), PACOAST INC.,
a California corporation ("Pacoast"), and VALLEY GREEN CENTER, INC., a
Massachusetts corporation ("Valley Green") (Verdant, Safer, SureCo, Consep,
Hunt, Pacoast, and Valley Green are sometimes referred to herein individually as
a "Borrower" and collectively, the "Borrowers") and GENERAL ELECTRIC CAPITAL
CORPORATION, a New York corporation, for itself, as Lender, and as Agent for
Lenders, and the other Lenders signatory hereto.

                                    RECITALS
                                    --------

     A. Borrowers, Agent and Lenders are parties to that certain Amended and
Restated Credit Agreement dated as of July 14, 1999 (as from time to time
amended, restated, supplemented or otherwise modified and in effect, the "Credit
Agreement"), pursuant to which Agent and Lenders have made and may hereafter
make loans and advances and other extensions of credit to Borrowers.

     B. On and subject to the terms and conditions hereof, Borrowers wish, and
Agent and Lenders are willing, to amend certain provisions of, and give certain
waivers with respect to, the Credit Agreement, all on the terms and conditions
set forth in this Amendment.

     C. This Amendment shall constitute a Loan Document and these Recitals shall
be construed as part of this Amendment. Capitalized terms used herein without
definition are so used as defined in Annex A to the Credit Agreement.

     NOW, THEREFORE, in consideration of the premises and the mutual covenants
hereinafter contained, the parties hereto agree as follows:

          1. Amendment. The Credit Agreement is hereby amended as follows:

               (a) The following term is hereby inserted into Annex A of the
          Credit Agreement in alphabetical order:

               "B&I Loan Agreement" shall mean Term Loan Agreement dated August
               21, 1997 among SureCo., Southern Resources, Inc., Peach County
               Property, Inc., the guarantors thereunder and B&I Lending, LLC
               ("B&I"), without giving effect to any amendment or modification
               thereof.
<PAGE>

               (b) Section 1.1(b)(ii) is hereby amended by deleting it in its
          entirety and substituting therefor the following:

                    (ii) Borrower shall pay the principal amount of the Term
               Loan in eight (8) quarterly installments, commencing March 30,
               2000, as follows:

                  Payment Date                   Installment Amount
                  ------------                   ------------------

                  March 30, 2000                      $125,000
                  July 1, 2000                        $250,000
                  October 1, 2000                     $250,000
                  April 1, 2001                       $375,000
                  July 1, 2001                        $250,000
                  October 1, 2001                     $250,000
                  January 1, 2002                     $250,000
                  April 1, 2002                       $250,000

                    Notwithstanding anything contained herein to the contrary,
               Verdant shall pay the aggregate outstanding principal balance of
               the Term Loan on the Commitment Termination Date, if not sooner
               paid in full.

          2. Waiver. The Agent and the Lenders hereby waive the Events of
     Default arising under:

               (a) Section 8.1(b) of the Credit Agreement resulting solely from
          Borrowers' failure to (x) comply with the Capital Expenditures
          limitation set forth in Annex G to the Credit Agreement for Fiscal
          Year 1999 and (y) maintain the Interest Coverage Ratio set forth in
          Annex G to the Credit Agreement for the Fiscal Quarter ended December
          31, 1999; and

               (b) Section 8.1(e) of solely by virtue of certain defaults set
          forth on Schedule A hereto (collectively, the "Specified Defaults") by
          SureCo under the terms of the B&I Loan Agreement, which defaults
          permit B&I to cause Indebtedness in excess of $250,000 to become due
          prior to its stated maturity date.

          3. Representations and Warranties of Credit Parties. In order to
     induce Agent and Lenders to enter into this Amendment, each Credit Party
     hereby jointly and severally represents and warrants to Agent and Lenders
     that:

               (a) Representations and Warranties. After giving effect to this
          Amendment, no representation or warranty of any Credit Party contained
          in the Credit Agreement or any of the other Loan Documents, including
          this Amendment, shall be untrue or incorrect in any material respect
          as of the date hereof, except to the extent that such representation
          or warranty expressly relates to an earlier date.

                                       2
<PAGE>

               (b) Authorization, etc. Each Credit Party has the power and
          authority to execute, deliver and perform this Amendment. Each Credit
          Party has taken all necessary action (including, without limitation,
          obtaining approval of its stockholders, if necessary) to authorize its
          execution, delivery and performance of this Amendment. No consent,
          approval or authorization of, or declaration or filing with, any
          Governmental Authority, and no consent of any other Person, is
          required in connection with any Credit Party's execution, delivery and
          performance of this Amendment, except for those already duly obtained.
          This Amendment has been duly executed and delivered by each Credit
          Party and constitutes the legal, valid and binding obligation of each
          Credit Party, enforceable against it in accordance with its terms. No
          Credit Party's execution, delivery or performance of this Amendment
          conflicts with, or constitutes a violation or breach of, or
          constitutes as default under, or results in the creation or imposition
          of any Lien upon the property of any Credit Party by reason of the
          terms of (i) any contract, mortgage, lease, agreement, indenture or
          instrument to which any Credit Party is a party or which is binding
          upon it, (ii) any law or regulation or order or decree of any court
          applicable to any Credit Party, or (iii) the certificate or articles
          of incorporation or by-laws of any Credit Party.

          4. Conditions to Effectiveness. The effectiveness of this Amendment is
     expressly conditioned upon the satisfaction of each condition set forth in
     this Section 4 on or prior to the date hereof and consummation of all of
     the transactions contemplated thereby:

               (a) Documentation. Borrowers shall have delivered to Agent (on
          behalf of itself and Lenders) all of the following documents, all in
          form and substance acceptable to Agent in its discretion:

                    (i) Amendment. Duly executed originals of this Amendment.

                    (ii) Other Documents. All other agreements, certificates,
               opinions and other documents as Agent may reasonably request to
               accomplish the purposes of this Amendment.

               (b) Term Loan Paydown. Agent shall have received immediately
          available funds in an amount not less than $125,000 to be applied by
          Agent in accordance with Section 1.3(a) of the Credit Agreement.

               (c) Fee. Agent shall have received a fee in the amount of
          $50,000.

               (d) No Default. No Default or Event of Default shall have
          occurred and be continuing, or would result after giving effect
          hereto.

               (e) Representations and Warranties. After giving effect to this
          Amendment, no representation or warranty of any Credit Party contained
          in the Credit Agreement or any of the other Loan Documents, including
          this Amendment, shall be untrue or incorrect in any material respect
          as of the date hereof, except to the extent that such representation
          or warranty expressly relates to an earlier date.

               (f) Consents and Acknowledgments. Each Credit Party shall have
          obtained all consents, approvals and acknowledgments which may be
          required with respect to the execution, delivery and performance of
          this Amendment.

                                       3
<PAGE>

          5. Reference to and Effect on Loan Documents.

               (a) Ratification. Except as specifically amended above, the
          Credit Agreement and the other Loan Documents shall remain in full
          force and effect and each Credit Party hereby ratifies and confirms
          each such Loan Document.

               (b) No Waiver. Except as specifically provided in this Agreement,
          the execution, delivery and effectiveness of this Amendment shall not
          operate as a waiver or forbearance of any right, power or remedy of
          Agent or any Lender under the Credit Agreement or any of the other
          Loan Documents, or constitute a consent, waiver or modification with
          respect to any provision of the Credit Agreement or any of the other
          Loan Documents. Upon the effectiveness of this Amendment each
          reference in (a) the Credit Agreement to "this Agreement,"
          "hereunder," "hereof," or words of similar import and (b) any other
          Loan Document to "the Agreement" shall, in each case and except as
          otherwise specifically stated therein, mean and be a reference to the
          Credit Agreement as amended hereby.

          6. Miscellaneous.

               (a) Successors and Assigns. This Amendment shall be binding on
          and shall inure to the benefit of the Credit Parties, Agent and
          Lenders and their respective successors and assigns, except as
          otherwise provided herein. No Credit Party may assign, transfer,
          hypothecate or otherwise convey its rights, benefits, obligations or
          duties hereunder without the prior express written consent of Agent
          and Lenders. The terms and provisions of this Amendment are for the
          purpose of defining the relative rights and obligations of the Credit
          Parties, Agent and Lenders will respect to the transactions
          contemplated hereby and there shall be no third party beneficiaries of
          any of the terms and provisions of this Amendment.

               (b) Entire Agreement. This Amendment, including all schedules and
          other documents attached hereto or incorporated by reference herein or
          delivered in connection herewith, constitutes the entire agreement of
          the parties with respect to the subject matter hereof and supersedes
          all other understandings, oral or written, with respect to the subject
          matter hereof.

               (c) Fees and Expenses. As provided in Section 11.3 of the Credit
          Agreement, Borrower agree to pay on demand all fees, costs and
          expenses incurred by Agent in connection with the preparation,
          execution and delivery of this Amendment.

               (d) Headings. Section headings in this Amendment are included
          herein for convenience of reference only and shall not constitute a
          part of this Amendment for any other purpose.

               (e) Severability. Wherever possible, each provision of this
          Amendment shall be interpreted in such a manner as to be effective and
          valid under applicable law, but if any provision of this Amendment
          shall be prohibited by or invalid under applicable law, such provision
          shall be ineffective to the extent of such prohibition or invalidity,
          without invalidating the remainder of such provision or the remaining
          provisions of this Amendment.

                                       4
<PAGE>

               (f) Conflict of Terms. Except as otherwise provided in this
          Amendment, if any provision contained in this Amendment is in conflict
          with, or inconsistent with, any provision in any of the other Loan
          Documents, the provision contained in this Amendment shall govern and
          control.

               (g) Counterparts. This Amendment may be executed in any number of
          separate counterparts, each of which shall collectively and separately
          constitute one agreement. Delivery of an executed signature page to
          this Amendment by telecopy shall be effective as delivery of a
          manually executed signature page to this Amendment.

               (h) Incorporation of Credit Agreement. The provisions contained
          in Sections 11.9 and 11.13 of the Credit Agreement are incorporated
          herein by reference to the same extent as if reproduced herein in
          their entirety, except with reference to this Amendment rather than
          the Credit Agreement.

               (i) Acknowledgment. Each Credit Party hereby represents and
          warrants that there are no liabilities, claims, suits, debts, liens,
          losses, causes of action, demands, rights, damages or costs, or
          expenses of any kind, character or nature whatsoever, known or
          unknown, fixed or contingent (collectively, the "Claims"), which any
          Credit Party may have or claim to have against Agent or any Lender, or
          any of their respective affiliates, agents, employees, officers,
          directors, representatives, attorneys, successors and assigns
          (collectively, the "Lender Released Parties"), which might arise out
          of or be connected with any act of commission or omission of the
          Lender Released Parties existing or occurring on or prior to the date
          of this Amendment, including, without limitation, any Claims arising
          with respect to the Obligations or any Loan Documents. In furtherance
          of the foregoing, each Credit Party hereby releases, acquits and
          forever discharges the Lender Released Parties from any and all Claims
          that any Credit Party may have or claim to have, relating to or
          arising out of or in connection with the Obligations or any Loan
          Documents or any other agreement or transaction contemplated thereby
          or any action taken in connection therewith from the beginning of time
          up to and including the date of the execution and delivery of this
          Amendment. Each Credit Party further agrees forever to refrain from
          commencing, instituting or prosecuting any lawsuit, action or other
          proceeding against any Lender Released Parties with respect to any and
          all Claims.

                            [signature pages follow]

                                       5
<PAGE>

     IN WITNESS WHEREOF, this Amendment has been duly executed as of the date
first written above.

                                        VERDANT BRANDS, INC.
                                        SAFER, INC.
                                        SURECO, INC.

                                        By: /s/ Volker Oakey
                                           -----------------------------------
                                        Title: Executive Vice President,
                                               and Treasurer

                                        CONSEP, INC.
                                        PACOAST INC.
                                        RICHARD HUNT INC.
                                        VALLEY GREEN CENTER, INC.

                                        By: /s/ Volker Oakey
                                           -----------------------------------
                                        Title: Vice President, Secretary and
                                               Treasurer

                                        GENERAL ELECTRIC CAPITAL
                                        CORPORATION, as Agent and Lender

                                        By: /s/ (Illegible)
                                           -----------------------------------
                                        Title: Duly Authorized Signatory

     Each of the following Persons is a signatory to this Agreement in its
capacity as a Credit Party and not as a Borrower.

                                        SAFER, LTD.
                                        SOUTHERN RESOURCES, INC.

                                        By: /s/ John Hetterick
                                           -----------------------------------
                                        Title: Executive Vice President,
                                               Secretary and Treasurer

                                        FARCHAN LABORATORIES, INC.

                                        By: /s/ Volker Oakey
                                           -----------------------------------
                                        Title: Vice President, Secretary and
                                               Treasurer

                                       6<PAGE>

                                                                     Exhibit 4.1

                         CERTIFICATE OF DESIGNATION OF
                           SERIES OF PREFERRED STOCK

                           FIELDWORKS, INCORPORATED

                           STATEMENT OF DESIGNATION
                                      OF
                      RIGHTS, PREFERENCES AND LIMITATIONS
                                      OF
              SERIES B CONVERTIBLE PARTICIPATING PREFERRED STOCK

     The undersigned hereby certifies that the following resolutions
establishing the Series B Convertible Participating Preferred Stock of
Fieldworks, Incorporated, a Minnesota corporation (the "Company"), pursuant to
Section 302A.401 of the Minnesota Business Corporation Act were duly adopted by
the Board of Directors of the Company on November 20, 1999:

     WHEREAS, the Board of Directors believes that it is in the best interests
of the Company to create a class of preferred stock designated as the Series B
Convertible Participating Preferred Stock.

     RESOLVED, that the Resolution Establishing the Series, Setting Forth  the
     Designation and Fixing the Relative Rights and Preferences of Series B
     Convertible Participating Preferred Stock, attached hereto as Exhibit A, is
                                                                   ---------
     hereby adopted.

     FURTHER RESOLVED, that the officers of the Company are authorized and
     directed to prepare, execute, acknowledge and file such Certificate of
     Designation with the Secretary of State of Minnesota.

     IN WITNESS WHEREOF, the undersigned, the President and Chief Executive
Officer of the Company, being duly authorized on behalf of the corporation, has
executed this document the 20th day of November, 1999.

                                     FIELDWORKS, INCORPORATED

                                     By:  /s/ Karen L. Engebretson
                                        -------------------------------------
                                        Karen L. Engebretson
                                        Chief Financial Officer

                                      -1-
<PAGE>

                                                                       Exhibit A
                                                                       ---------

                           FIELDWORKS, INCORPORATED

                     RESOLUTION ESTABLISHING THE SERIES,
                   SETTING FORTH THE DESIGNATION AND FIXING
                    THE RELATIVE RIGHTS AND PREFERENCES OF
               SERIES B CONVERTIBLE PARTICIPATING PREFERRED STOCK

     Pursuant to the powers expressly granted to the Board of Directors of
Fieldworks, Incorporated, a Minnesota corporation (the "Company"), by the
provisions of the Articles of Incorporation of the Company and Chapter 302A of
the Minnesota Business Corporation Act, the Board of Directors of the Company
duly established by written action of the Board of Directors a series of shares
consisting of 4,250,000 shares, with the designation of the series and the
relative rights and preferences of the series as follows:

     1.   Designation.  The designation of the series of shares is Series B
          -----------
Convertible Participating Preferred Stock (the "Series B Shares") and the number
of shares of such series is 4,250,000.

     2.   Dividends.  Dividends shall be payable on the Series B Shares out of
          ---------
funds legally available for the declaration of dividends only if and when
declared by the Board of Directors. In no event shall any dividend be paid or
declared, nor shall any distribution be made, on the Common Stock, unless the
holders of the Series B Shares shall have consented thereto and shall
participate in such dividend on a pro rata basis with the holders of Common
Stock, counting the Series B Shares on an as-if-converted basis.

     3.   Liquidation Preference. In the event of any liquidation, the holders
          ----------------------
of the Series B Shares then outstanding shall be entitled to receive out of the
assets of the Company, prior and in preference to any distribution of any of the
assets or surplus funds of the Company to the holders of the Common Stock or any
other class of shares of preferred stock of the Company ranking junior to the
Series B Shares with respect to payments upon Liquidation (such preferred stock
hereinafter called "Junior Liquidation Stock"), and junior to any such
distribution to the holders of any class of shares of the Company ranking senior
to the Series B Shares in such respect, an amount equal to $1.00 per share plus
any accrued and unpaid dividends thereon for each Series B Share (the "preferred
amount"). Following any distribution of assets or surplus funds of the Company
to the holders of any outstanding series of Junior Liquidation Stock, the
remainder of any such assets or, surplus funds shall be distributed to the
holders of the Common Stock until each

                                      -1-
<PAGE>

holder shall have received an amount per share equal to the preferred amount.
Thereafter, any remaining assets or funds shall be distributed pro rata to the
holders of the Common Stock and the holders of the Series B Preferred Stock,
counting Series B Shares on an as-if-converted basis. If upon the occurrence of
any Liquidation, the assets and funds of the Company available for the
distribution to its shareholders shall be insufficient to pay the holders of the
Series B Shares the full preferred amount to which they shall be entitled, the
holders of the Series B Shares shall share ratably in any distribution of such
assets and surplus funds in proportion to the Series B Shares held by them.

     4.   Voting Rights. Each holder of record of Series B Shares shall be
          -------------
entitled to notice of and to attend all meetings of the shareholders of the
Company and shall be entitled at each such meeting to a number of votes for each
Series B Share held equal to the number of shares of Common Stock into which
each share of Series B Shares is then convertible. Each holder of Common Stock
shall have one vote on all matters submitted to the shareholders for each share
of Common Stock standing in the name of such holder on the books of the Company.
Except as otherwise provided in this Section 4 and in Section 5, and except as
otherwise required by agreement or law, the holders of the Series B Shares and
the holders of Common Stock of the Company shall vote as a single class on all
matters submitted to the shareholders.

     5.   Special Voting Rights for Directors.
          -----------------------------------

          (a)  Other than as provided in paragraphs (b) and (c) below of this
Section 5, the number of directors of the Company shall be fixed at seven (7).

          (b)  So long as any Series B Shares remain outstanding, the holders of
the Series B Shares shall have the right, voting as a class, to elect three (3)
directors of the Company, and shall have the right under the circumstances
described in paragraph (c) below, voting as a class, to elect two (2) additional
directors of the Company (each such director, a "Series B Director").  Such
                                                 -----------------
holders shall have the exclusive right to (i) terminate any Series B Director
during his or her term of office, with or without cause; and (ii) to fill any
vacancy among the Series B Directors.

          (c)  The holders of the Series B Shares, acting by a majority vote,
shall have the right to compel the Company to take all necessary action to
increase the number of directors from seven (7) to nine (9), and the right to
appoint two (2) additional directors to fill the vacancies created by such
increase, upon the occurrence of any one or more of the following (each a
"Triggering Event"):

               (i)    the Company incurs operating losses in excess of
          $1,000,000 for the fourth quarter of 1999;

                                      -2-
<PAGE>

               (ii)   the Company incurs operating losses in excess of $100,000
          for the first quarter of 2000;

               (iii)  the Company incurs an operating loss in any amount for the
second quarter of 2000;

               (iv)   the Company achieves operating income of less than
$200,000 in the third quarter of 2000;

               (v)    the Company achieves operating income of less than
$400,000 in the fourth quarter of 2000;

               (vi)   the Company achieves operating income of less than
$600,000 in the first quarter of 2001;

               (vii)  the Company achieves operating income of less than
$800,000 in the second quarter of 2001; or

               (viii) the Company achieves operating income of less than
$1,000,000 in any quarter commencing with the third quarter of 2001.

          (d)  As used in this Section 5, "operating income" and "operating
losses" shall mean, for any period, the amount of operating income or losses for
such period, if any, determined in accordance with generally accepted accounting
principles applied in a manner consistent with the application of such
principles in periods prior to 1999, provided that the impact of any expenses
directly attributable to the Management Services Agreement, dated  November 20,
1999, between the Company and Glenmount, LLC and revenues or expenses directly
attributable to (a) any reversal of prior inventory, warranty or other reserves,
(b) any sale of assets (other than inventory in the ordinary course), and (c)
any business acquired by the Company after the date hereof through merger,
acquisition of securities, acquisition of assets or otherwise, in each case,
shall be excluded from the determination of operating income or operating losses
pursuant to this sentence.

          (e)  This right of the holders of the Series B Shares to name two
additional directors shall lapse, and the number of Company directors shall
reduce to seven, if, six months after the election of two additional Series B
directors, the holders of the Series B shares have not exercised the conversion
rights granted in Section 7 below.

                                      -3-
<PAGE>

     6.   Protective Provisions. The Company shall not take any of the following
          ---------------------
actions without the prior affirmative written consent of the holders of at least
two-thirds (2/3) of the Series B Shares:

          (a)  alter, change or amend (by merger or otherwise) any of the
     rights, preferences or privileges of the Series B Shares;

          (b)  other than as provided in Section 5(c) hereof, amend, restate,
     alter, modify or repeal (by merger or otherwise) the Articles of
     Incorporation or the Bylaws of the Company, including, without limitation,
     amending, restating, modifying or repealing (by merger or otherwise) (i)
     any certificate of designation or preferences (as in effect from time to
     time) relating to any series of preferred stock or (ii) any of the rights,
     preferences and privileges of any other class of capital stock, or the
     terms or provisions of any option or convertible security;

          (c)  (i) create, authorize or issue any securities or shares of any
     such class or series of securities which rank senior to or on parity with
     the Series B Shares; (ii) create, authorize or issue any securities or
     shares of any such class or series of securities the holders of which have
     the right to cast more than one vote per share, and/or have the right,
     voting as a class or series, to elect one or more members of the Board of
     Directors; (iii) create, authorize or issue any securities or shares of any
     such class or series of securities convertible into, or exercisable,
     redeemable or exchangeable for, shares of any of the foregoing; (iv)
     increase or decrease the authorized number of shares of any of the
     foregoing; or (v) increase or decrease the authorized number of  Series B
     Shares;

          (d)  (i) initiate or suffer to exist any Liquidation Event with
     respect to the Company, (ii) enter into any merger or consolidation with
     any other Person that results in the holders of the Company's capital stock
     immediately prior to such transaction owning less than fifty percent (50%)
     of the voting power of the successor entity's capital stock after such
     transaction or (iii) otherwise discontinue or dispose of more than ten
     percent (10%) of the assets of the business of the Company, taken as a
     whole. For purposes of this Section 6, "Liquidation Event" shall mean any
     of the following events: (i) the commencement by the Company of a voluntary
     case under the bankruptcy laws of the United States, as now or hereafter in
     effect, or the commencement of an involuntary case against the Company,
     which petition shall not be opposed within fifteen (15) days or be
     dismissed within sixty (60) days after commencement thereof; (ii) the
     appointment of a custodian for, or the taking charge by a custodian of, all
     or substantially all of the property of the Company; (iii) the commencement
     by the Company or on its behalf or with its consent of any proceeding under
     any reorganization, arrangement, adjustment of debt, relief

                                      -4-
<PAGE>

     of debtors, dissolution, insolvency or liquidation or similar law of any
     jurisdiction whether now or hereafter in effect; (iv) the commencement by
     anyone without the Company's consent of any proceeding of the type set
     forth in the preceding clause (iii) which is not controverted within
     fifteen (15) days thereof and dismissed within sixty (60) days after the
     commencement thereof; (v) the adjudication of the Company as insolvent or
     bankrupt, or the adoption by the Company of a plan of liquidation, (vi) the
     occurrence of any Change of Control; or (vii) the filing of a certificate
     of dissolution on behalf of the Company with the Secretary of State of the
     State of Minnesota; in any of cases (i) through (vi) above, in a single
     transaction or series of related transactions. For purposes of this Section
     6(d), a "Change of Control" shall be deemed to have occurred upon (i) the
     consummation of a tender for or purchase of more than fifty percent (50%)
     of the Company's Common Stock by a third party other than the holder of a
     majority of the Series B Stock, in a single transaction or series of
     related transactions, or (ii) any other transaction such that the
     shareholders of the Company immediately prior to the consummation of such
     transaction possess less than fifty percent (50%) of the voting securities
     of the surviving or continuing entity immediately after the transaction, in
     a single transaction or a series of related transactions unless such
     transactions have been approved by the vote of all Series B Directors.

          (e)  initiate or suffer to exist any recapitalization of the Company,
     or reclassify any authorized capital stock of the Company into any other
     class or series of Capital Stock of the Company;

          (f)  redeem any shares of the Company's capital stock;

          (g)  (i) acquire, in one or a series of transactions, any equity
     ownership interest, by way of merger or otherwise, in any Person, or any
     asset or assets of any Person, where the aggregate consideration payable in
     connection with such acquisition (including, without limitation, cash
     consideration, the fair market value of any securities and the net present
     value of any deferred consideration) is at least $1,000,000, or (ii) make
     any capital expenditures in excess of $500,000 individually or $1,000,000
     for any fiscal year;

          (h)  change the number of directors of the Company to a number other
     than seven (7), or, under the circumstances in Section 5(c), nine (9), or
     the manner in which the directors are selected, except as set forth in
     Section 5(c) hereof;

          (i)  make any material change in the nature of its business as
     conducted on the date the Series B Shares are issued, or fail to conduct
     its business in the ordinary course consistent with past practice;

                                      -5-
<PAGE>

          (j)  sell, transfer, convey, lease or dispose of, outside the ordinary
     course of business, any material assets or properties of the Company,
     whether now or hereafter acquired, in any transaction or transactions that
     call for payments in excess of $500,000;

          (k)  establish or purchase any subsidiary;

          (l)  enter into any agreements, transactions or leases not in the
     ordinary course of the Company's business as conducted on the date hereof
     that call for payments in excess of $250,000;

          (m)  incur any new or additional indebtedness which exceeds $500,000,
     provided that this clause (m) shall not prohibit the extension, renewal,
     amendment or refinancing (including refinancings with other lenders) of the
     Company's existing credit facility with Spectrum Commercial Services, a
     division of Lyon Financial Services, Inc. on terms no more restrictive than
     those contained in the General Credit and Security Agreement dated November
     19, 1998 as amended on August 20, 1999, (except that interest rate
     "spreads" may increase by no more than 50 basis points over prime and
     principal amounts advanced against accounts receivable or inventory (but no
     other amounts of principal) may increase or decrease provided that advance
     rates are no greater than those currently in effect);

          (n)  other than as set forth in an annual compensation plan approved
     by the Series B Directors, increase management compensation with respect to
     any Person in an amount greater than ten percent (10%) in any single fiscal
     year (including without limitation by issuance of warrants, options or
     other contingent compensation), or hire any employee whose annual
     compensation will exceed $125,000; or

          (o)  except for transactions on customary and reasonable terms, enter
     into any transaction with (i) any Affiliate of the Company, (ii) any
     employee of the Company, (iii) any holder of more than five percent (5%) of
     the outstanding capital stock of any class or series of capital stock of
     the Company, (iv) any member of the immediate family of any Person set
     forth in clauses (i), (ii) and (iii) above, or (v) any corporation,
     partnership, trust or other entity in which any Person set forth in clauses
     (i), (ii), (iii) or (iv) above, or member of the family of any such Person,
     is a director, officer, trustee, partner or holder of more than five
     percent (5%) of the outstanding capital stock thereof. For purposes of this
     Agreement, the members of the "immediate family" of any Person shall
     consist of the spouse, parents, children, siblings, mothers- and fathers-
     in-law, sons- and daughters-in-law, and brothers- and sisters-in-law of
     such Person.

                                      -6-
<PAGE>

     7.   Conversion Rights.
          -----------------

          (a)  At Option of Holders.  Holders of Series B Shares may, at their
               --------------------
option, upon surrender of the certificates therefor, convert any or all of their
Series B Shares into fully paid and nonassessable shares of Common Stock at any
time. The right of holders of Series B Shares to convert their shares shall be
exercised by surrendering for such purpose to the Company or any transfer agent
for the Series B Shares, and at such other office or offices, if any, as the
Board of Directors may designate, certificates representing the Series B Shares
to be converted, duly endorsed in blank or accompanied by proper instruments of
transfer. Upon the surrender of certificates representing the Series B Shares to
be converted, the person converting such shares shall be deemed to be the holder
of record of the Common Stock (and such other securities and property as the
holders of Series B Shares may be entitled to upon the conversion thereof, as
hereinafter provided) issuable upon such conversion, and all rights with respect
to the Series B Shares surrendered shall forthwith terminate except the right to
receive the Common Stock or other securities, cash or other assets receivable
upon such conversion as herein provided.

          (b)  Conversion Rate/Conversion Price.  In addition to the adjustments
               --------------------------------
required by Section 7(e) and 7(f), the conversion of Series B Shares into Common
Stock shall be governed by the following: Series B Shares shall be convertible
into that number of fully paid and nonassessable shares of Common Stock
(calculated as to each conversion to the nearest 1/100th of a share) as shall be
determined by multiplying the "Conversion Rate," determined as hereinafter
provided, in effect at the time of conversion by the product of (i) the number
of shares of Series B Shares to be converted and (ii) the "Initial Conversion
Price" applicable to the shares of Series B Shares being converted (as
hereinafter defined) and dividing the product of such multiplication by the
"Conversion Price" applicable to the Series B Shares being converted, determined
as hereinafter provided, in effect at the time of conversion and making any
adjustments required by Section 7(e) hereof. The conversion rate shall initially
be one and shall be adjusted from time to time as provided in Section 7(e) (such
conversion rate, as so adjusted from time to time, being referred to herein as
the "Conversion Rate"). The "Initial Conversion Price" for the Series B Shares
shall be the price per Series B Share paid to the company upon the issuance
thereof. The conversion price for Series B Shares shall initially be equal to
the Initial Conversion Price and shall be adjusted from time to time as provided
in Section 7(f) (the conversion price for Series B Shares, as so adjusted from
time to time, being herein referred to as the "Conversion Price" applicable to
such Series B Shares).

          (c)  Reservation of Shares.  A number of shares of authorized but
               ---------------------
unissued Common Stock of the Company sufficient to provide for the conversion of
all of the Series B Shares outstanding upon the basis herein provided
("Conversion Common Stock") shall at all times be reserved by the Company, free
from preemptive rights, for such conversion. If the Company

                                      -7-
<PAGE>

shall issue any securities or make any change in its capital structure that
would change the number of shares of Common Stock into which each Series B Share
shall be convertible as herein provided, the Company shall at the same time also
make proper provision so that thereafter there shall be a sufficient number of
additional shares of capital stock authorized and reserved, free from preemptive
rights, for conversion of the outstanding Series B Shares on the new basis. The
Company shall comply with all securities laws regulating the offer and delivery
of shares of Common Stock upon conversion of Series B Shares and shall list such
shares on any national securities exchange on which the Common Stock is listed
or have such shares admitted for quotation on the Nasdaq National or Small Cap
Market if the Common Stock is admitted for quotation thereon.

          (d)  Fractional Shares.  No fractional shares of Common Stock shall be
               -----------------
issued upon the conversion of Series B Shares but, in lieu of any fraction of a
share of Common Stock that would otherwise be issuable in respect of the
aggregate number of such shares surrendered for conversion at one time by the
same holder, the Company shall pay in cash an amount equal to the product of (a)
the "Closing Price" (as defined in the next sentence) of a share of Common Stock
on the last trading day before the relevant conversion date and (b) such
fraction of a share. The "Closing Price" for each day shall be the last reported
sale price regular way or, in case no sale takes place on such day, the average
of the closing bid and asked prices regular way on such day, in either case as
reported on the New York Stock Exchange Composite Tape, or, if the Common Stock
is not listed or admitted to trading on such Exchange, on the principal national
securities exchange on which the Common Stock is listed or admitted to trading,
or, if the Common Stock is not listed or admitted to trading on any national
securities exchange, on the Nasdaq National or Small Cap Market, or, if the
Common Stock is not admitted for quotation on the Nasdaq National or Small Cap
Market, the average of the high bid and low asked prices on such day as recorded
by the National Association of Securities Dealers, Inc. through Nasdaq, or, if
the National Association of Securities Dealers, Inc. through Nasdaq shall not
have reported any bid and asked prices for the Common Stock on such day, the
average of the bid and asked prices for such day as furnished by any New York
Stock Exchange member firm selected from time to time by the Company for such
purpose, or, if no such bid and asked prices can be obtained from any such firm,
the fair market value of one share of the Common Stock on such day as determined
in good faith by the Board of Directors of the Company.

          (e)  Conversion Rate Adjustments.  Subject to Section 7(f) hereof, if
               ---------------------------
the Company shall (A) subdivide its outstanding Common Stock into a greater
number of shares, (B) combine the shares of its outstanding Common Stock into a
smaller number of shares or (C) declare a dividend upon its shares of Common
Stock payable in shares of Common Stock, then in each such case the Conversion
Rate in effect immediately prior thereto shall be proportionately adjusted so
that the holder of any shares of any Series B Shares thereafter

                                      -8-
<PAGE>

surrendered for conversion shall be entitled to receive, to the extent permitted
by applicable law, the number and kind of shares of capital stock of the Company
that such holder would have owned or have been entitled to receive after the
happening of such event had such Series B Shares been converted immediately
prior to the record date for such event (or if no record date is established in
connection with such event, the effective date for such action). An adjustment
pursuant to this Section 7(e) shall become effective immediately after the
record date in the case of a stock dividend or distribution, or immediately
after the effective date in the case of a subdivision, combination or
reclassification.

          (f)  Conversion Price Adjustments. With respect to Series B Shares, if
               ----------------------------
and whenever the Company shall issue or sell any shares of its Common Stock or
any securities convertible into or exercisable or exchangeable for shares of
Common Stock ("Convertible Securities") for a consideration per share (in the
case of the sale of any Convertible Securities, the amount, if any, payable for
such Convertible Security and upon the exercise or conversion thereof (and/or
upon the exercise or conversion of the securities receivable upon such exercise
or conversion) for each share of Common Stock receivable thereby shall be
included in determining such consideration per share) less than the Conversion
Price applicable to the Series B Shares, in effect immediately prior to the time
of such issuance or sale, then, forthwith upon such issuance or sale, such
higher Conversion Price(s) for the Series B Shares shall be reduced to a price
(calculated to the nearest tenth of a cent) determined by dividing (x) an amount
equal to the sum of (A) the number of shares of Common Stock outstanding
immediately prior to such issuance or sale multiplied by such higher Conversion
Price plus (B) the aggregate consideration, if any, received or receivable by
      ----
the Company for the shares of Common Stock issued or issuable upon the exercise
of any issued Convertible Security (and/or upon the exercise or conversion of
the security receivable upon such exercise or conversion), by (y) an amount
equal to the sum of (A) the number of shares of Common Stock outstanding
immediately prior to such issuance or sale plus (B) the number of shares of
                                           ----
Common Stock thus issued or sold or receivable upon the exercise or conversion
of the Convertible Securities (or the securities receivable upon the exercise or
conversion of such Securities). If any Convertible Securities taken into account
in any such adjustment of a Conversion Price subsequently expire without
exercise, such Conversion Price shall be recomputed to eliminate the effect of
such expired Convertible Securities. However, no adjustment pursuant to this
Section 7(f) shall be required upon the issuance of shares of Common Stock upon
conversion of any shares of preferred stock, including the Series B Shares,
outstanding prior to such issuance or sale or upon the exercise of options
available under the 1996 Directors Stock Option Plan or the 1999 Long-term
Incentive Plan of the Company as in effect prior to November 1, 1999.

          (g)  Consolidations, Mergers, Sales of Assets, Reclassifications and
               ---------------------------------------------------------------
Certain Dividends.  In case of any (A) consolidation or merger of the Company
-----------------
with any other company

                                      -9-
<PAGE>

(other than the merger of a subsidiary of the Company into the Company in a
transaction in which the Company is the surviving corporation and the
outstanding shares of capital stock of the Company are not exchanged for or
converted into any other securities, cash or other property), (B) sale or
transfer of all or substantially all of the assets of the Company for cash,
securities or other property, (C) any share exchange pursuant to which all of
the outstanding shares of Common Stock are converted into other securities or
property, or (D) issuance of any shares of the Company's capital stock in
connection with a reclassification of the Common Stock, the Company shall, prior
to or at the time of such transaction, make appropriate provision or cause
appropriate provision to be made so that the holders of each Series B Share then
outstanding shall have the right thereafter to receive the kind and amount of
shares of stock and other securities and property receivable upon such
consolidation, merger, sale, transfer, share exchange or reclassification by a
holder of the number of shares of Common Stock into which such Series B Shares
could have been converted immediately prior to the effective date of such
consolidation, merger, sale, transfer, share exchange or reclassification.  If
in connection with any such consolidation, merger, sale, transfer, share
exchange or reclassification, each holder Common Stock is entitled to elect to
receive either securities, cash or other assets upon completion of such
transaction, the Company shall provide or cause to be provided to each holder of
Series B Shares the right to elect the securities, cash or other assets into
which the Series B Shares held by such holder shall be convertible after
completion of any such transaction on the same terms and subject to the same
conditions applicable to holders of the Common Stock (including, without
limitation, notice of the right to elect, limitations on the period in which
such election shall be made and the effect of failing to exercise the election).

          (h)  Rounding. All calculations hereunder, unless otherwise specified,
               --------
shall be made to the nearest cent or to the nearest 1/100th of a share, as the
case may be.

          (i)  Notices.  Whenever the Conversion Rate or a Conversion Price is
               -------
adjusted as herein provided, the Company shall give prompt notice by mail to the
holders of the outstanding Series B Shares of such adjustment, which notice
shall set forth the adjustment and the new Conversion Rate or Conversion Price.
Notwithstanding the foregoing, failure by the Company to give such notice or a
defect in such notice shall not affect the binding nature of such corporate
action of the Company.

          (j)  Common Stock Defined.  As used herein, the term "Common Stock"
               --------------------
shall mean and include the presently authorized Common Stock of the Company and
shall also include any capital stock of any class of the Company (other than the
Series B Shares) hereafter authorized which shall have the right to vote on all
matters submitted to the shareholders of the Company and shall not be limited to
a fixed sum or percentage in respect of the rights of the holders thereof to
participate in dividends or in the distribution of assets upon the occurrence of
any Liquidation Event of the Company.

                                     -10-
<PAGE>

     8.   Preemptive Rights.  If Company offers to sell its common stock,
          -----------------
securities convertible into common stock, or any other debt (excluding debt
securities issued to banks or other financial institutions) or equity securities
other than the issuance of options or shares to employees, directors and
consultants which have been approved by the Series B Directors (the "Additional
Securities") it will first offer to the holders of the Series B Shares, or, if
applicable, Conversion Common Stock the right to purchase a portion of the
Additional Securities such that such holders' aggregate percentage ownership of
the Company on a fully diluted basis ("Purchasers' Percentage") will be
unchanged. The offer shall set forth the number of shares to be sold, the price,
and material terms and conditions.

The right of the holders to purchase in the aggregate Additional Securities up
to but not more than the Purchaser's Percentage may be exercised as follows:

          (a)  the Company shall provide each holder with written notice of the
number of securities to be issued and the cash price therefor;

          (b)  each holder shall have the right to purchase that percentage of
such securities equal to the ratio that the number of shares of Conversion
Common Stock held by such holder bears to the total number of shares of
Conversion Common Stock held by all holders;

          (c)  second, if not all holders elect to purchase their pro rata
share, then as to the excess of the amount of Purchaser's Percentage over the
shares taken by holders electing to purchase their pro rata part (such excess to
be referred to as the "Unsubscribed Shares"), the holders who do so elect shall
be offered the right to acquire pro rata among themselves based on their
holdings of Conversion Common Stock; and

          (d)  if after such offer, any of the Unsubscribed Shares remain
unsold, as to such unsold Unsubscribed Shares, as the holders who agreed to
purchase their pro rata part of the Unsubscribed Shares may agree, all within
thirty (30) days of notice by the Company of such proposed issuance.

          The Company may, within thirty (30) days, sell the remaining
securities not to be purchased by the holders to third parties on the terms and
conditions set forth in the offer delivered to holders, and the holders shall be
required to deliver the consideration to Company for the securities being
purchased by the holders at the same time such third parties are required to
deliver their consideration to Company.

                                     -11-
<PAGE>

          Notwithstanding anything in this Section 8 to the contrary, the
holders' rights under this Section 8 shall not apply to (i) the securities of
the Company outstanding immediately prior to the issuance of the initial Series
B Shares; (ii) shares of common stock issued in connection with any stock split,
stock dividends or recapitalization of Company or upon conversion of the Series
B Shares; (iv) any borrowings, direct or indirect from financial institutions by
the Company, whether or not presently authorized, evidenced by any type of debt
instrument with no equity features; (v) securities issued pursuant to an
effective registration statement filed with the SEC in connection with a
registered public offering; (vi) equity securities issued to a financial
institution in connection with any lease financing or debt financing of the
Company approved by a two-thirds (2/3) vote of the Board of Directors; or (vii)
any transaction in which all directors of the Company elect for this Section 8
not to apply.

                                     -12-

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