Document:

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                                                                   EXHIBIT 10.28

                         FOURTH AMENDMENT AND EXTENSION
                              TO CREDIT AGREEMENT

         THIS FOURTH AMENDMENT TO CREDIT AGREEMENT (this "Amendment") is made
and entered into June 1, 2001, by and between GADZOOKS, INC., a Texas
corporation (the "Company"), and WELLS FARGO BANK TEXAS, National Association
(the "Bank").

                             PRELIMINARY STATEMENTS

         A. The Company and the Bank are parties to that certain Credit
Agreement, dated January 30, 1997, as modified and amended by that certain First
Amendment to Credit Agreement, dated June 11, 1998, that certain Second
Amendment to Credit Agreement dated May 14, 1999, and that certain Third
Amendment to Credit Agreement dated June 1, 2000 (collectively, the "Credit
Agreement"); and

         B. The Company and the Bank desire to amend the Credit Agreement and
the other Loan Documents (as defined in the Credit Agreement, as amended hereby)
to, among other things, (i) extend the payment due date for the Line of Credit
(as defined in the Credit Agreement); (ii) modify and amend certain covenants;
and (iii) modify and amend such other terms and conditions as set forth herein.

         NOW, THEREFORE, in consideration of the premises herein contained and
other good and valuable consideration, the receipt and sufficiency of which are
hereby acknowledged, the parties, intending to be legally bound, agree as
follows:

                                    ARTICLE I
                                   DEFINITIONS

         1.01 Capitalized terms used in this Amendment are defined in the Credit
Agreement, as amended hereby, unless otherwise stated.

                                   ARTICLE II
                                   AMENDMENTS

         2.01 AMENDMENT TO SECTION 1.1(a). Effective as of the date hereof,
Section 1.1(a) of the Credit Agreement is hereby amended by deleting therefrom
(i) the date "June 1, 2001" and substituting therefor the date "June 1, 2002"
and (ii) the last sentence thereof and substituting the following new sentence:

         "Borrower's obligations to repay the advances under this Line of Credit
         shall be evidenced by a Fourth Amended and Restated Revolving Line of
         Credit Note substantially in the form of Exhibit A-1 attached hereto
         ("Line of Credit Note"), all terms of which are hereby incorporated
         herein by reference."

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         2.02 AMENDMENT TO SECTION 1.1(c). Effective as of the date hereof,
Section 1.1(c) of the Credit Agreement is hereby amended by deleting therefrom
the date "May 1, 2001" and substituting therefor the date "May 1, 2002."

         2.03 AMENDMENT TO SECTION 2.5. Effective as of the date hereof, Section
2.5 of the Credit Agreement is hereby amended by deleting therefrom the date
"January 31, 2000" and substituting therefor the date "January 31, 2001."

         2.04 AMENDMENT TO SECTION 4.3. Effective as of the date hereof, Section
4.3 of the Credit Agreement is hereby amended by adding the following subsection
to read as follows:

                  "(h) not later than 10 days of a request by Bank, an accounts
         receivable listing and aging reports, an accounts payable listing and
         aging report and an inventory summary."

         2.05 AMENDMENT TO SECTION 4.9(b). Effective as of the date hereof,
Section 4.9(b) of the Credit Agreement is deleted and amended and restated in
its entirety to read as follows:

                  "(b) Working Capital not at any time less than $30,000,000.00,
         with "Working Capital" being defined as total current assets minus
         total current liabilities, with the Line of Credit being included as a
         current liability for this purpose."

         2.06 AMENDMENT TO SECTION 4.9(c). Effective as of the date hereof,
Section 4.9(c) of the Credit Agreement is deleted and amended and restated in
its entirety to read as follows:

                  "(c) Tangible Net Worth not at any time less than
         $77,500,000.00."

                                   ARTICLE III
                              CONDITIONS PRECEDENT

         3.01 CONDITIONS TO EFFECTIVENESS. The effectiveness of this Amendment
is subject to the satisfaction of the following conditions precedent, unless
specifically waived in writing by the Bank:

                  (a) The Bank shall have received the following documents, each
         in form and substance satisfactory to the Bank and its legal counsel:

                  (i)      this Amendment duly executed by the Company;

                  (ii)     the Fourth Amended and Restated Revolving Line of
                           Credit Note, in the form of Exhibit A-1 attached
                           hereto, duly executed by the Company;

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                  (iii)    a Company General Certificate certified by the
                           Secretary of the Company acknowledging that (A) the
                           Company's Board of Directors has by unanimous written
                           consent adopted resolutions which authorize the
                           execution, delivery and performance by the Company of
                           this Amendment and all other Loan Documents to which
                           the Company is or will be a party to, and (B) the
                           names of the officers of the Company authorized to
                           sign this Amendment and all other Loan Documents to
                           which the Company is or will be a party to, together
                           with specimen signatures of such officers; and

                  (iv)     the payment of the fee referred to in Section 1.2(c)
                           of the Credit Agreement (which shall be payable as a
                           result of entering into this Amendment).

                  (b) The representations and warranties contained herein and in
         the Credit Agreement and the other Loan Documents, as each is amended
         hereby, shall be true and correct as of the date hereof, as if made on
         the date hereof;

                  (c) No default or Event of Default shall have occurred and be
         continuing, unless such default or Event of Default has been
         specifically waived in writing by the Bank; and

                  (d) All corporate proceedings taken in connection with the
         transactions contemplated by this Amendment and all documents,
         instruments and other legal matters incident thereto shall be
         satisfactory to the Bank and its legal counsel.

                                   ARTICLE IV
                                    NO WAIVER

         4.01 Except as otherwise specifically provided for in this Amendment,
nothing contained herein shall be construed as a waiver by the Bank of any
covenant or provision of the Credit Agreement, the other Loan Documents, this
Amendment, or of any other contract or instrument between the Company and the
Bank, and the failure of the Bank at any time or times hereafter to require
strict performance by the Company of any provision thereof shall not waive,
affect or diminish any right of the Bank to thereafter demand strict compliance
therewith. The Bank hereby reserves all rights granted under the Credit
Agreement, the other Loan Documents, this Amendment and any other contract or
instrument between the Company and the Bank.

                                    ARTICLE V
                  RATIFICATIONS, REPRESENTATIONS AND WARRANTIES

         5.01 RATIFICATIONS. The terms and provisions set forth in this
Amendment shall modify and supersede all inconsistent terms and provisions set
forth in the Credit Agreement and the other Loan Documents, and, except as
expressly modified and superseded by this Amendment, the terms and provisions of
the Credit Agreement and the other Loan Documents are ratified and confirmed

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and shall continue in full force and effect. The Company and the Bank agree that
the Credit Agreement and the other Loan Documents, as amended hereby, shall
continue to be legal, valid, binding and enforceable in accordance with their
respective terms.

         5.02 REPRESENTATIONS AND WARRANTIES. The Company hereby represents and
warrants to the Bank that (a) the execution, delivery and performance of this
Amendment and any and all other Loan Documents executed and/or delivered in
connection herewith have been authorized by all requisite corporate action on
the part of the Company and will not violate the Articles of Incorporation or
Bylaws of the Company; (b) the representations and warranties contained in the
Credit Agreement, as amended hereby, and the other Loan Documents are true and
correct on and as of the date hereof and on and as of the date of execution
hereof as though made on and as of each such date; (c) no default or Event of
Default under the Credit Agreement, as amended hereby, has occurred and is
continuing, unless such default or Event of Default has been specifically waived
in writing by the Bank; (d) the Company is in full compliance with all covenants
and agreements contained in the Credit Agreement and the other Loan Documents,
as amended hereby; and (e) the Company has not amended its Articles of
Incorporation or its Bylaws since the date of the Credit Agreement or this
Amendment.

                                   ARTICLE VI
                            MISCELLANEOUS PROVISIONS

         6.01 SURVIVAL OF REPRESENTATIONS AND WARRANTIES. All representations
and warranties made in the Loan Agreement or any other Loan Documents,
including, without limitation, any document furnished in connection with this
Amendment, shall survive the execution and delivery of this Amendment and the
other Loan Documents, and no investigation by the Bank or any closing shall
affect the representations and warranties or the right of the Bank to rely upon
them.

         6.02 REFERENCE TO CREDIT AGREEMENT. Each of the Credit Agreement and
the other Loan Documents, and any and all other agreements, documents or
instruments now or hereafter executed and delivered pursuant to the terms hereof
or pursuant to the terms of the Credit Agreement, as amended hereby, are hereby
amended so that any reference in the Credit Agreement and such other Loan
Documents to the Credit Agreement shall mean a reference to the Credit Agreement
as amended hereby.

         6.03 EXPENSES OF THE BANK. The Company agrees to pay on demand all
reasonable costs and expenses incurred by the Bank in connection with any and
all amendments, modifications, and supplements to the Loan Documents, including,
without limitation, the costs and fees of the Bank's legal counsel, and all
costs and expenses incurred by the Bank in connection with the enforcement or
preservation of any rights under the Credit Agreement, as amended hereby, or any
other Loan Documents, including, without, limitation, the costs and fees of the
Bank's legal counsel.

         6.04 SEVERABILITY. Any provision of this Amendment held by a court of
competent jurisdiction to be invalid or unenforceable shall not impair or
invalidate the remainder of this

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Amendment and the effect thereof shall be confined to the provision so held to
be invalid or unenforceable.

         6.05 SUCCESSORS AND ASSIGNS. This Amendment is binding upon and shall
inure to the benefit of the Bank and the Company and their respective successors
and assigns, except that the Company may not assign or transfer any of its
rights or obligations hereunder without the prior written consent of the Bank.

         6.06 COUNTERPARTS. This Amendment may be executed in one or more
counterparts, each of which when so executed shall be deemed to be an original,
but all of which when taken together shall constitute one and the same
instrument.

         6.07 EFFECT OF WAIVER. No consent or waiver, express or implied, by the
Bank to or for any breach of or deviation from any covenant or condition by the
Company shall be deemed a consent to or waiver of any other breach of the same
or any other covenant, condition or duty.

         6.08 HEADINGS. The headings, captions, and arrangements used in this
Amendment are for convenience only and shall not affect the interpretation of
this Amendment.

         6.09 APPLICABLE LAW. THIS AMENDMENT AND ALL OTHER AGREEMENTS EXECUTED
PURSUANT HERETO SHALL BE DEEMED TO HAVE BEEN MADE AND TO BE PERFORMABLE IN AND
SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF
TEXAS.

         6.10 FINAL AGREEMENT. THE CREDIT AGREEMENT AND THE OTHER LOAN
DOCUMENTS, EACH AS AMENDED HEREBY, REPRESENT THE ENTIRE EXPRESSION OF THE
PARTIES WITH RESPECT TO THE SUBJECT MATTER HEREOF ON THE DATE THIS AMENDMENT IS
EXECUTED. THE CREDIT AGREEMENT AND THE OTHER LOAN DOCUMENTS, AS AMENDED HEREBY,
MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS OR SUBSEQUENT ORAL
AGREEMENTS OF THE PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE
PARTIES. NO MODIFICATION, RESCISSION, WAIVER, RELEASE OR AMENDMENT OF ANY
PROVISION OF THIS AMENDMENT SHALL BE MADE, EXCEPT BY A WRITTEN AGREEMENT SIGNED
BY THE COMPANY AND THE BANK.

         6.11 RELEASE. THE COMPANY HEREBY ACKNOWLEDGES THAT IT HAS NO DEFENSE,
COUNTERCLAIM, OFFSET, CROSS-COMPLAINT, CLAIM OR DEMAND OF ANY KIND OR NATURE
WHATSOEVER THAT CAN BE ASSERTED TO REDUCE OR ELIMINATE ALL OR ANY PART OF ITS
LIABILITY TO REPAY THE "INDEBTEDNESS" OR TO SEEK AFFIRMATIVE RELIEF OR DAMAGES
OF ANY KIND OR NATURE FROM THE BANK. THE COMPANY HEREBY VOLUNTARILY AND
KNOWINGLY RELEASES AND FOREVER DISCHARGES THE BANK, ITS PREDECESSORS, AGENTS,
EMPLOYEES, SUCCESSORS AND ASSIGNS, FROM ALL POSSIBLE CLAIMS, DEMANDS, ACTIONS,
CAUSES OF ACTION, DAMAGES, COSTS, EXPENSES, AND LIABILITIES

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WHATSOEVER, KNOWN OR UNKNOWN, ANTICIPATED OR UNANTICIPATED, SUSPECTED OR
UNSUSPECTED, FIXED, CONTINGENT, OR CONDITIONAL, AT LAW OR IN EQUITY, ORIGINATING
IN WHOLE OR IN PART ON OR BEFORE THE DATE THIS AMENDMENT IS EXECUTED, WHICH THE
COMPANY MAY NOW OR HEREAFTER HAVE AGAINST THE BANK, ITS PREDECESSORS, AGENTS,
EMPLOYEES, SUCCESSORS AND ASSIGNS, IF ANY, AND IRRESPECTIVE OF WHETHER ANY SUCH
CLAIMS ARISE OUT OF CONTRACT, TORT, VIOLATION OF LAW OR REGULATIONS, OR
OTHERWISE, AND ARISING FROM ANY LOANS OR EXTENSIONS OF CREDIT FROM THE BANK TO
THE COMPANY UNDER THE CREDIT AGREEMENT OR THE OTHER LOAN DOCUMENTS, INCLUDING,
WITHOUT LIMITATION, ANY CONTRACTING FOR, CHARGING, TAKING, RESERVING, COLLECTING
OR RECEIVING INTEREST IN EXCESS OF THE HIGHEST LAWFUL RATE APPLICABLE, THE
EXERCISE OF ANY RIGHTS AND REMEDIES UNDER THE CREDIT AGREEMENT OR OTHER LOAN
DOCUMENTS, AND NEGOTIATION FOR AND EXECUTION OF THIS AMENDMENT.

              [THE REMAINDER OF THIS PAGE INTENTIONALLY LEFT BLANK]

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         IN WITNESS WHEREOF, this Amendment has been executed and is effective
as of the date first above-written.

                                      COMPANY:

                                      GADZOOKS, INC.

                                      By:   /s/ JAMES A. MOTLEY
                                          -------------------------------------
                                            James A. Motley
                                            Vice President, Chief Financial
                                            Officer, and Secretary

                                      BANK:

                                      WELLS FARGO BANK TEXAS, NATIONAL
                                      ASSOCIATION

                                      By:   /s/ LISA M. AUTRY
                                          -------------------------------------
                                            Lisa M. Autry
                                            Vice President

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                                                                     EXHIBIT A-1

                           FOURTH AMENDED AND RESTATED
                          REVOLVING LINE OF CREDIT NOTE

                                                                   Dallas, Texas
$15,000,000.00                                                      June 1, 2001

         FOR VALUE RECEIVED, the undersigned GADZOOKS, INC., a Texas corporation
("Borrower"), promises to pay to the order of WELLS FARGO BANK TEXAS, National
Association ("Bank") at its office at Dallas RCBO, 1445 Ross, Suite 300, Dallas,
Texas 75202, Attn. Lisa M. Autry, or at such other place as the holder hereof
may designate, in lawful money of the United States of America and in
immediately available funds, the principal sum of Fifteen Million Dollars
($15,000,000.00), or so much thereof as may be advanced and be outstanding, with
interest thereon, to be computed on each advance from the date of its
disbursement as set forth herein.

DEFINITIONS:

         As used herein, the following terms shall have the meanings set forth
after each, and any other term defined in this Note shall have the meaning set
forth at the place defined:

         (a) "Business Day" means any day except a Saturday, Sunday or any other
day on which commercial banks in Texas are authorized or required by law to
close.

         (b) "Fixed Rate Term" means a period commencing on a Business Day and
continuing for 1, 2, or 3 months as designated by Borrower, during which all or
a portion of the outstanding principal balance of this Note bears interest
determined in relation to LIBOR; provided however, that no Fixed Rate Term may
be selected for a principal amount less than One Hundred Thousand Dollars
($100,000.00); and provided further, that no Fixed Rate Term shall extend beyond
the scheduled maturity date hereof. If any Fixed Rate Term would end on a day
which is not a Business Day, then such Fixed Rate Term shall be extended to the
next succeeding Business Day.

         (c) "LIBOR" means the rate per annum (rounded upward, if necessary, to
the nearest whole 1/8 of 1%) and determined pursuant to the following formula:

         LIBOR =                   Base LIBOR
                  --------------------------------------------
                           100% - LIBOR Reserve Percentage

                  (i) "Base LIBOR" means the rate per annum for United States
dollar deposits quoted by Bank as the Inter-Bank Market Offered Rate, with the
understanding that such rate is quoted by Bank for the purpose of calculating
effective rates of interest for loans making reference thereto, on the first day
of a Fixed Rate Term for delivery of funds on said date for a period of time
approximately equal to the number of days in such Fixed Rate Term and in an
amount approximately equal to the principal amount to which such Fixed Rate Term
applies. Borrower understands and agrees that Bank may base its quotation of the
Inter-Bank Market Offered Rate upon such offers or other market indicators of
the Inter-Bank Market as Bank in its

<PAGE>   9

discretion deems appropriate including, but not limited to, the rate offered for
U.S. dollar deposits on the London Inter-Bank Market.

                  (ii) "LIBOR Reserve Percentage" means the reserve percentage
prescribed by the Board of Governors of the Federal Reserve System (or any
successor) for "Eurocurrency Liabilities" (as defined in Regulation D of the
Federal Reserve Board, as amended), adjusted by Bank for expected changes in
such reserve percentage during the applicable Fixed Rate Term.

         (d) "Prime Rate" means at any time the rate of interest most recently
announced within Bank at its principal office as its Prime Rate, with the
understanding that the Prime Rate is one of Bank's base rates and serves as the
basis upon which effective rates of interest are calculated for those loans
making reference thereto, and is evidenced by the recording thereof after its
announcement in such internal publication or publications as Bank may designate.

INTEREST:

         (a) Interest. The outstanding principal balance of this Note shall bear
interest (computed on the basis of a 360-day year, actual days elapsed, unless
such calculation would result in a usurious rate, in which case interest shall
be computed on the basis of a 365/366-day year, as the case may be, actual days
elapsed) at the lesser of (i) either (A) a fluctuating rate per annum equal to
the Prime Rate in effect from time to time, or (B) a fixed rate per annum
determined by Bank to be 1.95000% above LIBOR in effect on the first day of the
applicable Fixed Rate Term, or (ii) the Maximum Rate. When interest is
determined in relation to the Prime Rate, each change in the rate of interest
hereunder shall become effective on the date each Prime Rate change is announced
within Bank. With respect to each LIBOR selection hereunder, Bank is hereby
authorized to note the date, principal amount, interest rate and Fixed Rate Term
applicable thereto and any payments made thereon on Bank's books and records
(either manually or by electronic entry) and/or on any schedule attached to this
Note, which notations shall be prima facie evidence of the accuracy of the
information noted.

         (b) Selection of Interest Rate Options. At any time any portion of this
Note bears interest determined in relation to LIBOR, it may be continued by
Borrower at the end of the Fixed Rate Term applicable thereto so that all or a
portion thereof bears interest determined in relation to the Prime Rate or to
LIBOR for a new Fixed Rate Term designated by Borrower. At any time any portion
of this Note bears interest determined in relation to the Prime Rate, Borrower
may convert all or a portion thereof so that it bears interest determined in
relation to LIBOR for a Fixed Rate Term designated by Borrower. At such time as
Borrower requests an advance hereunder or wishes to select a LIBOR option for
all or a portion of the outstanding principal balance hereof, and at the end of
each Fixed Rate Term, Borrower shall give Bank notice specifying: (i) the
interest rate option selected by Borrower; (ii) the principal amount subject
thereto; and (iii) for each LIBOR selection, the length of the applicable Fixed
Rate Term. Any such notice may be given by telephone so long as, with respect to
each LIBOR selection, (A) Bank receives written confirmation from Borrower not
later than three (3) Business Days after such telephone notice is given, and (B)
such notice is given to Bank prior to 10:00 a.m.,

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<PAGE>   10
California time, on the first day of the Fixed Rate Term. For each LIBOR option
requested hereunder, Bank will quote the applicable fixed rate to Borrower at
approximately 10:00 a.m., California time, on the first day of the Fixed Rate
Term. If Borrower does not immediately accept the rate quoted by Bank, any
subsequent acceptance by Borrower shall be subject to a redetermination by Bank
of the applicable fixed rate; provided however, that if Borrower fails to accept
any such rate by 11:00 a.m., California time, on the Business Day such quotation
is given, then the quoted rate shall expire and Bank shall have no obligation to
permit a LIBOR option to be selected on such day. If no specific designation of
interest is made at the time any advance is requested hereunder or at the end of
any Fixed Rate Term, Borrower shall be deemed to have made a Prime Rate interest
selection for such advance or the principal amount to which such Fixed Rate Term
applied.

         (c)      Additional LIBOR Provisions.

                  (i) If Bank at any time shall determine that for any reason
adequate and reasonable means do not exist for ascertaining LIBOR, then Bank
shall promptly give notice thereof to Borrower. If such notice is given and
until such notice has been withdrawn by Bank, then (A) no new LIBOR option may
be selected by Borrower, and (B) any portion of the outstanding principal
balance hereof which bears interest determined in relation to LIBOR, subsequent
to the end of the Fixed Rate Term applicable thereto, shall bear interest
determined in relation to the Prime Rate.

                  (ii) If any law, treaty, rule, regulation or determination of
a court or governmental authority or any change therein or in the interpretation
or application thereof (each, a "Change in Law") shall make it unlawful for Bank
(A) to make LIBOR options available hereunder, or (B) to maintain interest rates
based on LIBOR, then in the former event, any obligation of Bank to make
available such unlawful LIBOR options shall immediately be canceled, and in the
latter event, any such unlawful LIBOR-based interest rates then outstanding
shall be converted, at Bank's option, so that interest on the portion of the
outstanding principal balance subject thereto is determined in relation to the
Prime Rate; provided however, that if any such Change in Law shall permit any
LIBOR-based interest rates to remain in effect until the expiration of the Fixed
Rate Term applicable thereto, then such permitted LIBOR-based interest rates
shall continue in effect until the expiration of such Fixed Rate Term. Upon the
occurrence of any of the foregoing events, Borrower shall pay to Bank
immediately upon demand such amounts as may be necessary to compensate Bank for
any fines, fees, charges, penalties or other costs incurred or payable by Bank
as a result thereof and which are attributable to any LIBOR options made
available to Borrower hereunder, and any reasonable allocation made by Bank
among its operations shall be conclusive and binding upon Borrower.

                  (iii) If any Change in Law or compliance by Bank with any
request or directive (whether or not having the force of law) from any central
bank or other governmental authority shall:

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<PAGE>   11

                  (A)      subject Bank to any tax, duty or other charge with
                           respect to any LIBOR options, or change the basis of
                           taxation of payments to Bank of principal, interest,
                           fees or any other amount payable hereunder (except
                           for changes in the rate of tax on the overall net
                           income of Bank); or

                  (B)      impose, modify or hold applicable any reserve,
                           special deposit, compulsory loan or similar
                           requirement against assets held by, deposits or other
                           liabilities in or for the account of, advances or
                           loans by, or any other acquisition of funds by any
                           office of Bank; or

                  (C)      impose on Bank any other condition;

and the result of any of the foregoing is to increase the cost to Bank of
making, renewing or maintaining any LIBOR options hereunder and/or to reduce any
amount receivable by Bank in connection therewith, then in any such case,
Borrower shall pay to Bank immediately upon demand such amounts as may be
necessary to compensate Bank for any additional costs incurred by Bank and/or
reductions in amounts received by Bank which are attributable to such LIBOR
options. In determining which costs incurred by Bank and/or reductions in
amounts received by Bank are attributable to any LIBOR options made available to
Borrower hereunder, any reasonable allocation made by Bank among its operations
shall be conclusive and binding upon Borrower.

         (d) Payment of Interest. Interest accrued on this Note shall be payable
on the 1st day of each March, June, September and December, commencing September
1, 2001.

BORROWING AND REPAYMENT:

         (a) Borrowing and Repayment. Borrower may from time to time during the
term of this Note borrow, partially or wholly repay its outstanding borrowings,
and reborrow, subject to all of the limitations, terms and conditions of this
Note and of any document executed in connection with or governing this Note;
provided, however, that the total outstanding borrowings under this Note shall
not at any time exceed the principal amount stated above. The unpaid principal
balance of this obligation at any time shall be the total amounts advanced
hereunder by the holder hereof less the amount of principal payments made hereon
by or for any Borrower, which balance may be endorsed hereon from time to time
by the holder. The outstanding principal balance of this Note shall be due and
payable in full on June 1, 2002.

         (b) Advances. Advances hereunder, to the total amount of the principal
sum stated above, may be made by the holder at the oral or written request of
GERALD SZCZEPANSKI or RONALD SZCZEPANSKI or JAMES A. MOTLEY, any one acting
alone, who are authorized to request advances and direct the disposition of any
advances until written notice of the revocation of such authority is received by
the holder at the office designated above, The holder shall have no obligation
to determine whether any such person requesting an advance remains authorized by
any Borrower after the date hereof.

                                       4
<PAGE>   12

         (c) Application of Payments. Each payment made on this Note shall be
credited first, to any interest then due and second, to the outstanding
principal balance hereof. All payments credited to principal shall be applied
first, to the outstanding principal balance of this Note which bears interest
determined in relation to the Prime Rate, if any, and second, to the outstanding
principal balance of this Note which bears interest determined in relation to
LIBOR, with such payments applied to the oldest Fixed Rate Term first.

PREPAYMENT:

         (a) Prime Rate. Borrower may prepay principal on any portion of this
Note which bears interest determined in relation to the Prime Rate at any time,
in any amount and without penalty.

         (b) LIBOR. Borrower may prepay principal on any portion of this Note
which bears interest determined in relation to LIBOR at any time and in the
minimum amount of Ten Thousand Dollars ($10,000.00); provided, however, that if
the outstanding principal balance of such portion of this Note is less than said
amount, the minimum prepayment amount shall be the entire outstanding principal
balance thereof. In consideration of Bank providing this prepayment option to
Borrower, or if any such portion of this Note shall become due and payable at
any time prior to the last day of the Fixed Rate Term applicable thereto,
Borrower shall pay to Bank immediately upon demand a fee which is the sum of the
discounted monthly differences for each month from the month of prepayment
through the month in which such Fixed Rate Term matures, calculated as follows
for each such month:

         (i)      Determine the amount of interest which would have accrued each
                  month on the amount prepaid at the interest rate applicable to
                  such amount had it remained outstanding until the last day of
                  the Fixed Rate Term applicable thereto.

         (ii)     Subtract from the amount determined in (i) above the amount of
                  interest which would have accrued for the same month on the
                  amount prepaid for the remaining term of such Fixed Rate Term
                  at LIBOR in effect on the date of prepayment for new loans
                  made for such term and in a principal amount equal to the
                  amount prepaid.

         (iii)    If the result obtained in (ii) for any month is greater than
                  zero, discount that difference by LIBOR used in (ii) above.

Each Borrower acknowledges that prepayment of such amount may result in Bank
incurring additional costs, expenses and/or liabilities, and that it is
difficult to ascertain the full extent of such costs, expenses and/or
liabilities. Each Borrower, therefore, agrees to pay the above-described
prepayment fee and agrees that said amount represents a reasonable estimate of
the prepayment costs, expenses and/or liabilities of Bank.

                                       5
<PAGE>   13

EVENTS OF DEFAULT:

         This Note is made pursuant to and is subject to the terms and
conditions of that certain Credit Agreement between Borrower and Bank dated
January 30, 1997, as amended pursuant to the First Amendment to Credit Agreement
dated June 11, 1998, the Second Amendment to Credit Agreement dated May 14,
1999, the Third Amendment to Credit Agreement dated June 1, 2001, and the Fourth
Amendment to Credit Agreement, dated the date hereof, as the same may be further
amended from time to time (the "Credit Agreement"). Any default in the payment
or performance of any obligation under this Note, or any defined Event of
Default under the Credit Agreement, shall constitute an "Event of Default" under
this Note.

MISCELLANEOUS:

         (a) Remedies. Upon the occurrence of any Event of Default, the holder
of this Note, at the holder's option, may declare all sums of principal and
accrued and unpaid interest outstanding hereunder to be immediately due and
payable without presentment, demand, or any notices of any kind, including
without limitation notice of nonperformance, notice of protest, protest, notice
of dishonor, notice of intention to accelerate or notice of acceleration, all of
which are expressly waived by each Borrower, and the obligation, if any, of the
holder to extend any further credit hereunder and under the Credit Agreement
shall immediately cease and terminate. Borrower shall pay to the holder
immediately upon demand the full amount of all payments, advances, charges,
costs and expenses, including reasonable attorneys' fees (to include outside
counsel fees and all allocated costs of the holder's in-house counsel to the
extent permissible), expended or incurred by the holder in connection with the
enforcement of the holder's rights and/or the collection of any amounts which
become due to the holder under this Note, and the prosecution or defense of any
action in any way related to this Note, including without limitation, any action
for declaratory relief, whether incurred at the trial or appellate level, in an
arbitration proceeding or otherwise, and including any of the foregoing incurred
in connection with any bankruptcy proceeding (including without limitation, any
adversary proceeding, contested matter or motion brought by Bank or any other
person) relating to any Borrower or any other person or entity.

         (b) Obligations Joint and Several. Should more than one person or
entity sign this Note as a Borrower, the obligations of each such Borrower shall
be joint and several.

         (c) Governing Law. This Note shall be governed by and construed in
accordance with the laws of the State of Texas.

         (d) Savings Clause. It is the intention of the parties to comply
strictly with applicable usury laws. Accordingly, notwithstanding any provision
to the contrary in this Note, or in any contract, instrument or document
evidencing or securing the payment hereof or otherwise relating hereto (each, a
"Related Document"), in no event shall this Note or any Related Document require
the payment or permit the payment, taking, reserving, receiving, collection or
charging of any sums constituting interest under applicable laws that exceed the
maximum

                                       6
<PAGE>   14
amount permitted by such laws, as the same may be amended or modified from time
to time (the "Maximum Rate"). If any such excess interest is called for,
contracted for, charged, taken, reserved or received in connection with this
Note or any Related Document, or in any communication by Bank or any other
person to Borrower or any other person, or in the event that all or part of the
principal or interest hereof or thereof shall be prepaid or accelerated, so that
under any of such circumstances or under any other circumstance whatsoever the
amount of interest contracted for, charged, taken, reserved or received on the
amount of principal actually outstanding from time to time under this Note shall
exceed the Maximum Rate, then in such event it is agreed that: (i) the
provisions of this paragraph shall govern and control; (ii) neither Borrower nor
any other person or entity now or hereafter liable for the payment of this Note
or any Related Document shall be obligated to pay the amount of such interest to
the extent it is in excess of the Maximum Rate; (iii) any such excess interest
which is or has been received by Bank, notwithstanding this paragraph, shall be
credited against the then unpaid principal balance hereof or thereof, or if this
Note or any Related Document has been or would be paid in full by such credit,
refunded to Borrower; and (iv) the provisions of this Note and each Related
Document, and any other communication to Borrower, shall immediately be deemed
reformed and such excess interest reduced, without the necessity of executing
any other document, to the Maximum Rate. The right to accelerate the maturity of
this Note or any Related Document does not include the right to accelerate,
collect or charge unearned interest, but only such interest that has otherwise
accrued as of the date of acceleration. Without limiting the foregoing, all
calculations of the rate of interest contracted for, charged, taken, reserved or
received in connection with this Note and any Related Document which are made
for the purpose of determining whether such rate exceeds the Maximum Rate shall
be made to the extent permitted by applicable laws by amortizing, prorating,
allocating and spreading during the period of the full term of this Note or such
Related Document, including all prior and subsequent renewals and extensions
hereof or thereof, all interest at any time contracted for, charged, taken,
reserved or received by Bank. The terms of this paragraph shall be deemed to be
incorporated into each Related Document.

                  To the extent that any of the optional interest rate ceilings
provided in Chapter 303 of the Texas Finance Code may be available for
application to any loan(s) or extension(s) of credit under this Note or the
Credit Agreement for the purpose of determining the maximum allowable interest
hereunder pursuant to the Texas Finance Code (Vernon's Texas Code Annotated), as
amended from time to time (as amended, the "Texas Finance Code"), the applicable
"weekly ceiling" (as such term is defined in Chapter 303 of the Texas Finance
Code) from time to time in effect shall be used to the extent that it is so
available.

         (e) Right of Setoff; Deposit Accounts. Upon and after the occurrence of
an Event of Default, (i) Borrower hereby authorizes Bank, at any time and from
time to time, without notice, which is hereby expressly waived by Borrower, and
whether or not Bank shall have declared this Note to be due and payable in
accordance with the terms hereof, to set off against, and to appropriate and
apply to the payment of, Borrower's obligations and liabilities under this Note
(whether matured or unmatured, fixed or contingent, liquidated or unliquidated),
any and all amounts owing by Bank to Borrower (whether payable in U.S. dollars
or any other currency,

                                       7
<PAGE>   15
whether matured or unmatured, and in the case of deposits, whether general or
special (except trust and escrow accounts), time or demand and however
evidenced), and (ii) pending any such action, to the extent necessary, to hold
such amounts as collateral to secure such obligations and liabilities and to
return as unpaid for insufficient funds any and all checks and other items drawn
against any deposits so held as Bank, in its sole discretion, may elect.
Borrower hereby grants to Bank a security interest in all deposits and accounts
maintained with Bank and with any other financial institution to secure the
payment of all obligations and liabilities of Borrower to Bank under this Note.

         (f) Business Purpose. Borrower represents and warrants that all loans
evidenced by this Note are for a business, commercial, investment, agricultural
or other similar purpose and not primarily for a personal, family or household
use.

         (g) Certain Tri-Party Accounts. Borrower and Bank agree that Chapter
346 of the Texas Finance Code (which regulates certain revolving credit loan
accounts and revolving tri-party accounts) shall not apply to any revolving loan
accounts created under this Note or maintained in connection herewith.

NOTICE: THIS NOTE AND ALL OTHER DOCUMENTS RELATING TO THE INDEBTEDNESS EVIDENCED
HEREBY CONSTITUTE A WRITTEN LOAN AGREEMENT WHICH REPRESENTS THE FINAL AGREEMENT
BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR,
CONTEMPORANEOUS OR SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES. THERE ARE NO
UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES RELATING TO THIS NOTE AND THE
INDEBTEDNESS EVIDENCED HEREBY.

         This Note is a renewal, extension and restatement of that certain
Revolving Credit Note dated January 30, 1997 in the face amount of
$10,000,000.00 (the "Original Note"), as amended, extended and restated by that
certain First Amended and Restated Revolving Line of Credit Note dated June 11,
1998 in the face amount of $20,000,000.00 (the "First Amended Note"), that
certain Second Amended and Restated Revolving Credit Note dated May 14, 1999 in
the face amount of $10,000,000.00 (the "Second Amended Note"), and that certain
Third Amended and Restated Revolving Credit Note dated June 1, 2000 (the "Third
Amended Note") and accordingly, this Note is not intended to be or constitute a
repayment, novation or termination of the Original Note, the First Amended Note,
the Second Amended Note, and the Third Amended Note.

                   [BALANCE OF PAGE INTENTIONALLY LEFT BLANK]

                                       8
<PAGE>   16
         IN WITNESS WHEREOF, the undersigned has executed this Note as of the
date first written above.

                                      GADZOOKS, INC.

                                      By: /s/ JAMES A. MOTLEY
                                          -------------------------------------
                                          James A. Motley
                                          Vice President, Chief
                                          Financial Officer, and Secretary

                                       9<PAGE>   1
                                                                    EXHIBIT 4.07

                     New Millennium Capital Partners II, LLC
                            155 First Street, Suite B
                                Mineola, NY 11501

                                AJW Partners, LLC
                            155 First Street, Suite B
                                Mineola, NY 11501

March 28, 2001

DeMarco Energy Systems of America, Inc.
12885 Highway 183
Suite 108-A
Austin, Texas 78750

                  Re:      Amendments to Transaction Documents

Ladies and Gentlemen:

         The parties to this letter agreement have agreed to amend (i) the
Convertible Debenture Purchase Agreement ("Purchase Agreement"), dated September
26, 2000, between AJW Partners, LLC ("AJW"), New Millennium Capital Partners II,
LLC ( "New Millennium" and together with AJW, the "Holders") and DeMarco Energy
Systems of America, Inc. (the "Company") and (ii) the 10% Secured Convertible
Debenture ("Convertible Debenture") issued to the Holders by the Company and due
on September 26, 2001, in the manner set forth below. Capitalized terms used in
this letter agreement and not otherwise defined shall have the meanings set
forth in the Convertible Debenture or the Purchase Agreement.

         (1) Section 1.1(a)(iii) of the Purchase Agreement currently provides,
among other things, that the Holders shall provide additional funding to the
Company in an aggregate amount equal to $1,000,000 within thirty days following
the Effective Date. Such provision is now amended solely to provide that such
additional funding shall occur within 5 days following the Effective Date.

         (2) The Convertible Debentures issued to each Holder currently
provides, among other things, that "the Holder may elect to receive interest
hereunder in shares of [c]ommon [s]tock or cash." Such provision is now amended
to provide that any interest due under the Convertible Debentures shall be
payable in cash or shares of the Company's common stock at the option of the
Company and not the Holders.

         This Agreement may be executed in two or more counterparts, all of
which when taken together shall be considered one and the same agreement and
shall become effective when counterparts have been signed by each party and
delivered to the other party, it being understood that both parties need not
sign the same counterpart. In the event that any signature is delivered by
facsimile transmission, such signature shall create a valid and binding
obligation of the party executing (or on whose behalf such signature is
executed) the same with the same force and effect as if such facsimile signature
page were an original thereof.

         Except as otherwise specified in this amendment, the terms and
provisions of the Purchase Agreement and the Convertible Debentures remain
without modification. Please indicate your agreement with the foregoing by
executing this letter and returning the same to our attention, whereupon this
letter agreement shall immediately become a legally valid and binding agreement
between the Holders and the Company.

<PAGE>   2

         Sincerely,

         New Millennium Capital Partners II, LLC
                  By:  First Street Manager II, LLC

         By: /s/
            ---------------------------------------
                  Name:
                  Title:

         AJW Partners, LLC
                  By:  SMS Group, LLC

         By: /s/
            ---------------------------------------
                  Name:
                  Title:

         DeMarco Energy Systems of America, Inc.

         By: /s/
            ---------------------------------------
                  Name:
                  Title:

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