Document:

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                                                                   Exhibit 10.23

                        AMENDED AND RESTATED EMPLOYMENT
                        -------------------------------
                        AND NON-INTERFERENCE AGREEMENT
                        ------------------------------

     This Amended and Restated Employment and Non-Interference Agreement (this
"Agreement") is dated as of April 21, 2000, by and between Lawrence E. Jaro (the
"Executive") and National Restaurant Enterprises, Inc., a Delaware corporation
(the "Company") and a wholly-owned subsidiary of AmeriKing, Inc., a Delaware
corporation ("Parent");

                              W I T N E S S E T H:
                              -------------------

     WHEREAS, Executive and the Company entered into an Employment and Non-
Interference Agreement, dated as of July 1, 1996 (the "Prior Employment
Agreement");

     WHEREAS, Executive and the Company wish to amend and restate the Prior
Employment Agreement in its entirety in the manner set forth herein;

     WHEREAS, the Company wishes to obtain the continued future services of the
Executive for the Company; and

     WHEREAS, the Executive is willing, upon the terms and conditions herein set
forth, to provide services hereunder; and

     WHEREAS, the Company wishes to secure the Executive's non-interference,
upon the terms and conditions herein set forth;

     NOW, THEREFORE, in consideration of the mutual promises and covenants
contained herein, and intending to be legally bound hereby, the parties hereto
agree as follows:

          1.  Nature of Employment
              --------------------

     Subject to Section 3, the Company hereby employs Executive, and Executive
agrees to accept such employment, during the Term of Employment (as defined in
Section 3(a)), (a) as Chairman of the Board and Chief Executive Officer of
Parent and the Company and to undertake such duties and responsibilities as may
be reasonably assigned to Executive from time to time by the Board of Directors
of Parent or the Company and (b) as Managing Owner of Parent and the Company as
provided by The Burger King Corporation franchise entity form of ownership
guidelines, the Burger King Uniform Franchise Offering Circular, as amended or
updated from time to time, and any other franchise and other regulations and
requirements, from time to time in effect (the "Burger King Regulations") of the
Burger King Corporation.
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     2.  Extent of Employment
         --------------------

     (a)  During the Term of Employment, the Executive shall perform his
obligations hereunder faithfully and to the best of his ability at the principal
executive offices of the Company, under the direction of the Board of Directors
of the Company, and shall abide by the rules, customs and usages from time to
time established by the Company and the Parent.

     (b)  During the Term of Employment, the Executive shall devote all of his
business time, energy and skill as may be reasonably necessary for the
performance of his duties, responsibilities and obligations hereunder (except
for vacation periods and reasonable periods of illness or other incapacity),
consistent with past practices and norms in similar positions.

     (c)  Nothing contained herein shall require Executive to follow any
directive or to perform any act which would violate any Burger King Regulations
or any laws, ordinances, regulations or rules of any governmental, regulatory or
administrative body, agent or authority, any court or judicial authority, or any
public, private or industry regulatory authority.  Executive shall act in good
faith in accordance with all Burger King Regulations and laws, ordinances,
regulations or rules of any governmental, regulatory or administrative body,
agent or authority, any court or judicial authority, or any public, private or
industry regulatory authority to the extent the Executive knows or has
reasonable notice of such Burger King regulations, laws, ordinances, regulations
or rules.

     (d)  During the term of his employment, the Executive shall live in the
Chicago area and generally perform his duties under this Agreement from the
Company's offices in the Chicago area.

     3.  Term of Employment; Termination
         -------------------------------

     (a)  The "Term of Employment" shall commence on the date hereof and shall
continue for a term of three years.  Should the Executive's employment by the
Company be earlier terminated pursuant to Section 3(b) or by the Executive
pursuant to Section 3(c), the Term of Employment shall end on the date of such
earlier termination.

     (b)   Subject to the payments contemplated by Section 3(e), Term of
Employment may be terminated at any time by the Company:

          (i)  upon the death of Executive;

          (ii)  in the event that because of physical or mental disability the
     Executive is unable to perform, and does not perform, in the view of the
     Company and as certified by a competent medical physician, his duties
     hereunder for a continuous period of 180 days;

          (iii)  for Cause (as defined in Section 3(c));

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          (iv)  for any other reason not referred to in clauses (i) through
     (iii) or no reason, such that this Agreement, subject to the provisions of
     Section 3(e), shall be construed as terminable at will by the Company.

     Executive acknowledges that no representations or promises have been made
concerning the grounds for termination or the future operation of the Company's
business, and that nothing contained herein or otherwise stated by or on behalf
of the Company modifies or amends the right of the Company to terminate
Executive at any time, with or without Cause. Termination shall become effective
upon the delivery by the Company to the Executive of notice specifying such
termination and the reasons therefor.

     (c)  Subject to the payments contemplated by Section 3(e), the Term of
Employment may be terminated at any time by the Executive:

          (i)  upon the death of Executive;

          (ii)  in the event that because of physical or mental disability the
     Executive is unable to perform, and does not perform, in the view of the
     Company, and as certified by a competent medical physician, his duties
     hereunder for a continuous period of 180 days;

          (iii)  as a result of material reduction in Executive's authority,
     perquisites, position or responsibilities (other than such a reduction
     which affects all of the Company's senior executives on a substantially
     equal or proportionate basis) or the Company's willful, material violation
     of its obligations under this Agreement, in each case, after 30 days' prior
     written notice to the Company and its Board of Directors and the Company's
     failure thereafter to cure such reduction or violation; or

          (iv)  voluntarily or for any reason or no reason not referred to in
     clauses (i) through (iii) in each case, after 120 days' prior written
     notice to the Company and its Board of Directors.

     (d)  For the purposes of this Section 3, "Cause" shall mean any of the
following:

          (i)  Executive's conviction of a serious felony or a crime involving
     embezzlement, conversion of property or moral turpitude; (ii) a final,
     non-appealable finding of Executive's fraud, embezzlement or conversion of
     property; (iii) a final non-appealable finding of Executive's breach of any
     of his fiduciary duties to the Company or its stockholders or making of a
     willful misrepresentation or omission which breach, misrepresentation or
     omission might reasonably be expected to materially adversely affect the
     business, properties, assets, condition (financial or other) or prospects
     of the Company, provided, that, the Executive has been given notice and 30
     days from such notice fails to cure the breach, misrepresentation or
     omission; (iv) Executive's willful and continual neglect or failure to
     discharge his duties, responsibilities or obligations prescribed by this
     Agreement or any other agreement between the Executive and the

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     Company, provided, that, the Executive has been given notice and 30 days
     from such notice fails to cure the neglect or failure; (v) Executive's
     habitual drunkenness or substance abuse, which materially interferes with
     Executive's ability to discharge his duties, responsibilities and
     obligations prescribed by this Agreement, provided that Executive has been
     given notice and 30 days from such notice fails to cure such drunkenness or
     abuse; (vi) Executive's material and knowing violation of any obligations
     imposed upon Executive, personally, as opposed to upon the Company, whether
     as a stockholder or otherwise, under this Agreement, the Purchase and Sale
     Agreement, dated September 1, 1994, by and among the Company, the Parent
     and Burger King Corporation, the Franchise Agreement, dated September 1,
     1994, by and among the Company, Parent and Burger King Corporation, the
     Certificate of Incorporation or By-Laws of the Company, each as amended to
     date, provided, that the Executive has been given notice and 90 days from
     such notice fails to cure the violation; or (vii) Executive's personal (as
     opposed to the Company's) material and knowing failure, to observe or
     comply with Burger King Regulations whether as an officer, stockholder or
     otherwise, in any material respect or in any manner which might reasonably
     have a material adverse effect in respect of the Company's ongoing
     business, operations, conditions, franchises, other business relationships
     or properties; provided, that the Executive has been given notice and 90
     days from such notice fails to cure the failure.

     (e)  In the event Executive's employment is terminated pursuant to

          (i)  Section 3(b)(i) or (ii) or 3(c)(i) or (ii), the Company will pay
     to Executive (or his estate or representative) the full amounts to which he
     would be entitled under Section 4(a) for the period from effectiveness of
     termination through the first anniversary of such termination;

          (ii)  Section 3(b)(iii) or 3(c)(iv) there will be no amounts owing by
     the Company to Executive under this Agreement from and after such
     termination, except for accrued, but unused vacation pay and sick pay which
     shall be paid to the Executive in accordance with Company practices; and

          (iii)  Section 3(b)(iv) or 3(c)(iii), the Company will pay the
     Executive the full amounts to which he would be entitled under Section 4(a)
     for the period from effectiveness of termination through the third
     anniversary of this Agreement, payable in two installments, half payable
     upon the effectiveness of termination and half payable upon the last day of
     such period.

Termination of the Term of Employment will not terminate Sections 7, 8, 9, 10,
12 through 24, or any other provisions not associated specifically with the Term
of Employment.

In the event of Termination and the Company is obligated to make payments
pursuant to this Section 3(e), the Company's payment obligations under this
Section 3(e) will be mitigated and

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reduced to the extent of Executive's compensation under alternative employment
during the period for which payments are owed by the Company pursuant to this
Section 3(e).

     (f)  Upon the conclusion of the original three year term of this Agreement
("Original Term") and upon each succeeding anniversary of this Agreement, the
Executive's Term of Employment will be automatically renewed for another year;
provided that neither the Company nor the Executive terminates this Agreement
pursuant to Section 3 during the Original Term; and provided further that after
such Original Term neither the Company nor the Executive provides notice of
termination to the other at least 120 days before the anniversary of this
Agreement. Pursuant to such termination notice, this Agreement will terminate
upon the succeeding anniversary.

     (g)  Notwithstanding the foregoing, if Executive is a Managing Owner in
respect of the Company for purposes of the Burger King Regulations, then the
foregoing termination rights will be subject to either (i) the Company
identifying and obtaining another Managing Owner, for purposes of the Burger
King Regulations, if the Company shall then have no other Managing Owner prior
to or concurrently with such termination, (ii) compliance with the Burger King
Regulations, or (iii) the prior approval of Burger King Corporation.

     4.   Compensation.  During the Term of Employment, the Company shall pay
compensation to Executive as follows:

     (a)  As base compensation for his services hereunder, in bimonthly
installments, a base salary at a rate of $400,000 per annum, as increased, on an
annual basis to reflect the increase in the United States Government cost of
living index for the Chicago, Illinois area. Notwithstanding the minimum
increase set forth above, the Board of Directors in their sole discretion, may
establish a higher compensation level.

     (b)  An annual bonus compensation of up to 70% of his annual base
compensation based on Executive's performance as determined and approved by the
Board of Directors, in its sole discretion. Such bonus will be at the full
discretion of the Board of Directors, and may not be paid at all. Executive
acknowledges that no such bonuses have been agreed upon or promised. If the
Board of Directors decides to pay a bonus, it is to be paid within thirty days
after the issuance of audited financial statements for the Company. The Board of
Directors in their sole discretion may establish a higher bonus level based on
the performance of Executive.

     (c)  During the Term of Employment the Executive shall receive an
automobile allowance of $800 per month and reimbursements for automobile
insurance, repairs, maintenance and business-related fuel not to exceed $6,000
per annum.

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     5.   Reimbursement of Expenses.
          -------------------------

     During the Term of Employment, the Company shall reimburse Executive for
documented travel, entertainment and other expenses reasonably incurred by
Executive in connection with the performance of his duties hereunder and, in
each case, in accordance with the rules, customs and usages promulgated by the
Company from time to time in effect.

     6.   Benefits
          --------

     (a)  During the Term of Employment, the Executive shall be entitled to
perquisites and benefits (including health, short and long term disability,
pension and life insurance benefits consistent with past practice, or as
increased from time to time) established from time to time, by the Board of
Directors for executives of the Company.

     (b)  After the Term of Employment, the Company shall provide such insurance
benefits to Executive until the earlier to occur of the date upon which
Executive is eligible to receive Medicare or the death of Executive; provided,
however, that in consideration for the covenant on the part of the Company to
provide insurance coverage, Executive shall provide consulting services to the
Company, on a schedule mutually agreeable to Executive and the Company and in a
manner reasonably acceptable to the Company.

     7.   Confidential Information
          ------------------------

     (a)  During and after the Term of Employment, Executive will not, directly
or indirectly in one or a series of transactions, disclose to any person, or use
or otherwise exploit for the Executive's own benefit or for the benefit of
anyone other than the Company, any Confidential Information (as defined in
Section 11), whether prepared by Executive or not; provided, however, that any
Confidential Information may be disclosed to officers, representatives,
employees and agents of the Company who need to know such Confidential
Information in order to perform the services or conduct the operations required
or expected of them in the Business (as defined in Section 11). Executive shall
use his best efforts to prevent the removal of any Confidential Information from
the premises of the Company, except as required in his normal course of
employment by the Company. Executive shall use his best efforts to cause all
persons or entities to whom any Confidential Information shall be disclosed by
him hereunder to observe the terms and conditions set forth herein as though
each such person or entity was bound hereby. Executive shall have no obligation
hereunder to keep confidential any Confidential Information if and to the extent
disclosure of any thereof is specifically required by law; provided, however,
that in the event disclosure is required by applicable law, the Executive shall
provide the Company with prompt notice of such requirement, prior to making any
disclosure, so that the Company may seek an appropriate protective order. At the
request of the Company, Executive agrees to deliver to the Company, at any time
during the Term of Employment, or thereafter, all Confidential Information which
he may possess or control. Executive agrees that all Confidential Information of
the Company (whether now or hereafter existing) conceived, discovered or made by
him during the Term of Employment exclusively belongs to the Company

                                      -6-
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(and not to Executive). Executive will promptly disclose such Confidential
Information to the Company and perform all actions reasonably requested by the
Company to establish and confirm such exclusive ownership.

     (b)  The terms of this Section 7 shall survive the termination of this
Agreement regardless of who terminates this Agreement, or the reasons therefor.

     8.   Non-Interference
          ----------------

     (a)  Executive acknowledges that services to be provided give him the
opportunity to have special knowledge of the Company and its Confidential
Information and the capabilities of individuals employed by or affiliated with
the Company and that interference in these relationships would cause irreparable
injury to the Company. In consideration of this Agreement, Executive covenants
and agrees that:

          (i)  From the date hereof until the later to occur of three years from
     the date hereof, or the first anniversary of expiration on termination of
     the Term of Employment (the "Restricted Period"), Executive will not,
     without the express written approval of the Board of Directors of the
     Company, anywhere in the Market, directly or indirectly, in one or a series
     of transactions, own, manage, operate, control, invest or acquire an
     interest in, or otherwise engage or participate in, whether as a
     proprietor, partner, stockholder, lender, director, officer, employee,
     joint venturer, investor, lessor, supplier, agent, representative or other
     participant, in any business which competes, directly or indirectly, with
     the Business in the Market ("Competitive Business") without regard to (A)
     whether the Competitive Business has its office, manufacturing or other
     business facilities within or without the Market, (B) whether any of the
     activities of the Executive referred to above occur or are performed within
     or without the Market or (C) whether the Executive resides, or reports to
     an office, within or without the Market; provided, however, that (x) the
     Executive may, anywhere in the Market, directly or indirectly, in one or a
     series of transactions, own, invest or acquire an interest in up to five
     percent (5%) of the capital stock of a corporation whose capital stock is
     traded publicly, or that (y) Executive may accept employment with a
     successor company to the Company.

          (ii)  During the Restricted Period (which shall not include any period
     of violation of this Agreement by Executive or period which is required for
     litigation to enforce the rights hereunder), Executive will not without the
     express prior written approval of the Board of Directors of the Company (A)
     directly or indirectly, in one or a series of transactions, recruit,
     solicit or otherwise induce or influence any proprietor, partner,
     stockholder, lender, director, officer, employee, sales agent, joint
     venturer, investor, lessor, supplier, customer, agent, representative or
     any other person which has a business relationship with the Company or had
     a business relationship with the Company within the twenty-four (24) month
     period preceding the date of the incident in question, to discontinue,
     reduce or modify such employment, agency or business relationship with the
     Company, or (B) employ or seek to employ or cause any Competitive Business
     to

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     employ or seek to employ any person or agent who is then (or was at any
     time within six (6) months prior to the date the Executive or the
     Competitive Business employs or seeks to employ such person) employed or
     retained by the Company. Notwithstanding the foregoing, nothing herein
     shall prevent the Executive from providing a letter of recommendation to an
     employee with respect to a future employment opportunity.

          (iii)  The scope and term of this Section 8 would not preclude him
     from earning a living with an entity that is not a Competitive Business.

     (b)  Upon a final, non-appealable finding that the Executive has breached
his obligations in any material respect under this Section 8, the Company, in
addition to pursuing all available remedies under this Agreement, at law or
otherwise, and without limiting its right to pursue the same shall cease all
payments to the Executive under this Agreement or any other agreement.

     9.   Non-Disparagement
          -----------------

     During and after the Term of Employment, the Executive agrees that he shall
not make any false, defamatory or disparaging statements about Parent, the
Company, their respective businesses, or the officers or directors of Parent or
the Company. During and after the Term of Employment, Parent and the Company
agree that neither the officers nor the directors of Parent or the Company shall
make any false, defamatory or disparaging statements about the Executive.

     10.  Defense of Claims
          -----------------

     The Executive agrees that, for the period beginning on the date hereof, and
continuing for a reasonable period after termination of the Term of Employment,
the Executive will cooperate with the Company in defense of any claims that may
be made against the Company, and will cooperate with the Company in the
prosecution of any claims that may be made by the Company, to the extent that
such claims may relate to services performed by the Executive for the Company.
The Executive agrees to promptly inform the Company if he becomes aware of any
lawsuits involving such claims that may be filed against the Company. The
Company agrees to reimburse the Executive for all of the Executive's reasonable
out-of-pocket expenses associated with such cooperation, including travel
expenses. For periods during and following the Executive's employment with the
Company, the Company agrees to provide reasonable compensation to the Executive
for such cooperation in addition to reimbursement of expenses and his reasonable
attorneys' fees, if any.

     11.  Definitions
          -----------

     "Burger King Regulations" is defined in Section 1.

     "Business" means (a) the construction, development, operations, ownership
and promotion of restaurants in which the Burger King Corporation is either (i)
the exclusive

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franchisor or (ii) co-franchisor in a dual-use restaurant, or (b) any similar or
incidental business conducted, or engaged in, by the Company prior to the date
hereof or at any time during the Term of Employment.

     "Cause" is defined in Section 3(d).

     "Companies" means Parent and its successors or any of its direct or
indirect subsidiaries (including the Company), now or hereafter existing.

     "Company" is defined in the introduction.

     "Competitive Business" is defined in Section 8(a)(i).

     "Confidential Information" means any confidential information including,
without limitation, any study, data, calculations, software storage media or
other compilation of information, patent, patent application, copyright,
trademark, trade name, service mark, service name, "know-how", trade secrets,
customer lists, details of client or consultant contracts, pricing policies,
operational methods, marketing plans or strategies, product development
techniques or plans, business acquisition plans or any portion or phase of any
scientific or technical information, ideas, discoveries, designs, computer
programs (including source of object codes), processes, procedures, formulae,
improvements or other proprietary or intellectual property of the Company,
whether or not in written or tangible form, and whether or not registered, and
including all files, records, manuals, books, catalogues, memoranda, notes,
summaries, plans, reports, records, documents and other evidence thereof. The
term "Confidential Information" does not include, and there shall be no
obligation hereunder with respect to, information that becomes generally
available to the public other than as a result of a disclosure by the Executive
not permissible hereunder.

     "Executive" means Lawrence Jaro or his estate, if deceased.

     "Market" means any county in the United States of America and each similar
jurisdiction in any other country in which the Business was conducted by or
engaged in by the Company prior to the date hereof or is conducted or engaged
in, or for which a restaurant site is in development, by the Company at any time
during the Term of Employment.

     "Restricted Period" is defined in Section 8(a)(i).

     "Term of Employment" is defined in Section 3(a).

     12.  Notice
          ------

     Any notice, request, demand or other communication required or permitted to
be given under this Agreement shall be given in writing and if delivered
personally, or sent by certified or

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registered mail, return receipt requested, as follows (or to such other
addressee or address as shall be set forth in a notice given in the same
manner):

     If to Executive:    Lawrence E. Jaro
                         100 E. Huron, #3605
                         Chicago, Illinois  60611

                         with a copy to:

                         Jones & Keller, P.C.
                         1625 Broadway, Suite 1600
                         Denver, Colorado  80202
                         Attention:  Ernest J. Panasci, Esq.
                         Tel: (303) 573-1600
                         Fax: (303) 573-0769

     If to Company:      AmeriKing, Inc.
                         2215 Enterprise Drive
                         Suite 1502
                         Westchester, IL  60154
                         Attention: James P. Hoar, General Counsel
                         Tel: (708) 947-2140
                         Fax: (708) 562-0729

                         The Jordan Company
                         767 Fifth Avenue, 48th Floor
                         New York, NY 10153
                         Attention: A. Richard Caputo, Jr.
                         Tel: (212) 572-0800
                         Fax: (212) 755-5263

                         with a copy to:

                         Mayer, Brown & Platt
                         1675 Broadway, Suite 1900
                         New York, New York 10019
                         Attention: Martin J. Collins, Esq.
                         Tel: (212) 506-2500
                         Fax: (212) 262-1910

Any such notices shall be deemed to be given on the date personally delivered or
such return receipt is issued.

     13.  Executive's Representation
          --------------------------

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     Executive hereby warrants and represents to the Company that: (i) Executive
has carefully reviewed this Agreement and the Prior Employment Agreement and has
consulted with such advisors as Executive considers appropriate in connection
with this Agreement and the Prior Employment Agreement, (ii) Executive is not
subject to any covenants, agreements or restrictions, including without
limitation any covenants, agreements or restrictions arising out of Executive's
prior employment or the Burger King Regulations which would be breached or
violated by Executive's execution of this Agreement or by Executive's
performance of his duties hereunder and (iii) Executive will not knowingly
breach or violate any provision of the Burger King Regulations in any material
respect or in any manner which might reasonably have a material adverse effect
in respect of the Company's ongoing business, operations, conditions,
franchises, or other business relationships or properties.

     14. Other Matters
         -------------

     (a) Executive agrees and acknowledges that the obligations owed to
Executive under this Agreement are solely the obligations of the Company, and
that none of the Company's stockholders, directors, officers or lenders will
have any obligations or liabilities in respect of this Agreement and the subject
matter hereof.

     (b) Executive and the Company hereby agree and acknowledge that this
Agreement replaces and supersedes the Prior Employment Agreement, and upon the
execution of this Agreement, the Prior Employment Agreement shall automatically
be terminated and rendered without force and effect and that the Executive shall
release and discharge the Company and Parent, and their respective directors,
stockholders, officers and lenders from any further obligations or liabilities
thereunder.

     15.  Validity
          --------

     If, for any reason, any provision hereof shall be determined to be invalid
or unenforceable, the validity and effect of the other provisions hereof shall
not be affected thereby.

     16.  Severability
          ------------

     Whenever possible, each provision of this Agreement will be interpreted in
such manner as to be effective and valid under applicable law, but if any
provision of this Agreement is held to be invalid, illegal or unenforceable in
any respect under any applicable law or rule in any jurisdiction, such
invalidity, illegality or unenforceability will not affect any other provision
or any other jurisdiction, but this Agreement will be reformed, construed and
enforced in such jurisdiction as if such invalid, illegal or unenforceable
provision had never been contained herein. If any court determines that any
provision of Section 7, 8, 9, 10 or any other provision hereof is unenforceable
and therefore acts to reduce the scope or duration of such provision, as the
provision, in its reduced form, shall then be enforceable.

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     17.  Survival; Right to Withhold Payments
          ------------------------------------

     The terms of Sections 7, 8, 9 and 10 shall survive the termination of this
Agreement regardless of who terminates this Agreement, or the reasons therefor.
Upon the determination of a majority of the Board of Directors that the
Executive has breached his obligations in any material respect under Sections 7,
8, 9 or 10, the Company, in addition to pursuing all available remedies under
this Agreement, at law or otherwise, and without limiting its right to pursue
the same, shall cease all payments to the Executive under this Agreement.

     18.  Waiver of Breach; Specific Performance
          --------------------------------------

     The waiver by the Company or Executive of a breach of any provision of this
Agreement by the other party shall not operate or be construed as a waiver of
any other breach of such other party. Each of the parties (and third party
beneficiaries) to this Agreement will be entitled to enforce its rights under
this breach of any provision of this Agreement and to exercise all other rights
existing in its favor. The parties hereto agree and acknowledge that money
damages may not be an adequate remedy for any breach of the provisions of
Sections 7, 8, 9 and 10 of this Agreement and that any party (and third party
beneficiaries) may in its sole discretion apply to any court of law or equity of
competent jurisdiction for specific performance and/or injunctive relief,
including temporary restraining orders, preliminary injunctions and permanent
injunctions in order to enforce or prevent any violations of the provisions of
this Agreement. In the event either party takes legal action to enforce any of
the terms or provisions of this Agreement, the nonprevailing party shall pay the
successful party's costs and expenses, including but not limited to, reasonable
attorneys' fees, incurred in such action.

     19.  Assignment; Third Parties
          -------------------------

     (a)  Neither the Executive nor the Company may assign, transfer, pledge,
hypothecate, encumber or otherwise dispose of this Agreement or any of his or
its respective rights or obligations hereunder, without the prior written
consent of the other. In connection with a sale of all or substantially all of
the assets or outstanding capital stock of Parent or the Company or a merger,
consolidation or reorganization in which neither Parent nor the Company is the
surviving entity, the Company shall cause the purchaser or the surviving entity,
as the case may be, to assume all of the obligations of the Company under this
Agreement.

     (b)  The parties agree and acknowledge that each of the Companies and the
stockholders and investors therein are intended to be third party beneficiaries
of, and have rights and interests in respect of, Executive's agreements set
forth in Sections 7, 8, 9 and 10.

     20.  Amendment; Entire Agreement
          ---------------------------

     This Agreement may not be changed orally but only by an agreement in
writing agreed to by the party against whom enforcement of any waiver, change,
modification, extension or discharge is sought. This Agreement embodies the
entire agreement and understanding of the

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parties hereto in respect of the subject matter of this Agreement, and
supersedes and replaces all prior Agreements, understandings and commitments
with respect to such subject matter.

     21.  Litigation
          ----------

     THIS AGREEMENT SHALL BE GOVERNED BY, CONSTRUED, APPLIED AND ENFORCED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF ILLINOIS. EACH OF THE PARTIES HERETO
ACKNOWLEDGES AND AGREES THAT IN THE EVENT OF ANY BREACH OF THIS AGREEMENT, THE
NON-BREACHING PARTY WOULD BE IRREPARABLY HARMED AND COULD NOT BE MADE WHOLE BY
MONETARY DAMAGES, AND THAT, IN ADDITION TO ANY OTHER REMEDY TO WHICH THEY MAY BE
ENTITLED AT LAW OR IN EQUITY, THE PARTIES SHALL BE ENTITLED TO SUCH EQUITABLE OR
INJUNCTIVE RELIEF AS MAY BE APPROPRIATE. EACH PARTY AGREES THAT JURISDICTION AND
VENUE WILL BE PROPER IN CHICAGO, ILLINOIS AND WAIVES ANY OBJECTIONS BASED UPON
FORUM NON CONVENIENS. EACH PARTY WAIVES PERSONAL SERVICE OF PROCESS AND AGREES
THAT A SUMMONS AND COMPLAINT COMMENCING AN ACTION OR PROCEEDING SHALL BE
PROPERLY SERVED AND SHALL CONFER PERSONAL JURISDICTION IF SERVED BY REGISTERED
OR CERTIFIED MAIL TO THE PARTY AT THE ADDRESS SET FORTH IN THIS AGREEMENT, OR AS
OTHERWISE PROVIDED BY THE LAWS OF THE STATE OF ILLINOIS OR THE UNITED STATES.
THE CHOICE OF FORUM SET FORTH IN THIS SECTION 21 SHALL NOT BE DEEMED TO PRECLUDE
THE ENFORCEMENT OF ANY JUDGMENT OBTAINED IN ANY OTHER FORUM OR THE TAKING OF ANY
ACTION UNDER THIS AGREEMENT TO ENFORCE SAME IN ANY OTHER APPROPRIATE
JURISDICTION.

     22.  Arbitration
          -----------

     ANY DISPUTE BETWEEN OR AMONG THE PARTIES TO THIS AGREEMENT RELATING TO OR
IN RESPECT OF THIS AGREEMENT, ITS NEGOTIATION, EXECUTION, PERFORMANCE, SUBJECT
MATTER, OR ANY COURSE OF CONDUCT OR DEALING OR ACTIONS UNDER OR IN RESPECT OF
THIS AGREEMENT, INCLUDING, WITHOUT LIMITATION ANY CLAIM UNDER THE SECURITIES
ACT, THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED, ANY OTHER STATE OR FEDERAL
LAW RELATING TO SECURITIES OR FRAUD OR BOTH, THE RACKETEER INFLUENCED AND
CORRUPT ORGANIZATIONS ACT, AS AMENDED, OR FEDERAL OR STATE COMMON LAW, SHALL BE
SUBMITTED TO, AND RESOLVED EXCLUSIVELY PURSUANT TO, ARBITRATION IN ACCORDANCE
WITH THE COMMERCIAL ARBITRATION RULES OF THE AMERICAN ARBITRATION ASSOCIATION.
SUCH ARBITRATION SHALL TAKE PLACE IN CHICAGO, ILLINOIS, AND SHALL BE SUBJECT TO
THE SUBSTANTIVE LAW OF THE STATE OF ILLINOIS. DECISIONS AS TO FINDINGS OF FACT
AND CONCLUSIONS OF LAW PURSUANT TO SUCH ARBITRATION SHALL BE FINAL, CONCLUSIVE
AND BINDING ON THE PARTIES, SUBJECT TO CONFIRMATION, MODIFICATION OR CHALLENGE

                                      -13-
<PAGE>

PURSUANT TO 9 U.S.C. (S)(S) 1 ET SEQ. ANY FINAL AWARD SHALL BE ENFORCEABLE AS A
JUDGMENT OF A COURT OF RECORD.

     23.  Further Action
          --------------

     Executive and the Company agree to perform any further acts and to execute
and deliver any documents which may be reasonable to carry out the provisions
hereof.

     24.  Counterparts
          ------------

     This Agreement may be executed in counterparts, each of which shall be
deemed an original, but all of which together shall constitute one and the same
instrument.

                                      -14-
<PAGE>

     IN WITNESS WHEREOF, the parties hereto have set their hands as of the day
and year first written above.

                              EXECUTIVE:

                              /s/ Lawrence E. Jaro
                              -------------------------------------
                              Name:  Lawrence E. Jaro

                              NATIONAL RESTAURANT ENTERPRISES, INC.

                              By /s/ A. Richard Caputo, Jr.
                                 ----------------------------------
                                 Name:  A. Richard Caputo, Jr.
                                 Title: Vice President

                                      -15-<PAGE>   1
                                                                     EXHIBIT 4.2

                          INTROGEN THERAPEUTICS, INC.,

                         CERTIFICATE OF DESIGNATIONS OF
                 SERIES A NON-VOTING CONVERTIBLE PREFERRED STOCK

                  Pursuant to Section 151 of the General Corporation Law of the
State of Delaware, David G. Nance and Rodney Varner, being the Chief Executive
Officer and Secretary, respectively, of Introgen Therapeutics, Inc., a Delaware
corporation (the "Company"),

                  DO HEREBY CERTIFY:

                  FIRST, that they are the duly elected Chief Executive Officer
and Secretary, respectively, of the Company.

                  SECOND, that pursuant to the authority conferred upon the
Company's Board of Directors (the "Board") by Article Four of the Company's
Restated Certificate of Incorporation filed with the Delaware Secretary of State
on October 17, 2000 (the "Restated Certificate"), the Board on June 30, 2001
adopted the following recitals and resolutions creating a new series of
preferred stock designated as Series A Non-Voting Convertible Preferred Stock
(the "Series A Preferred):

                  WHEREAS, the Restated Certificate provides for two authorized
         classes of stock known as Common Stock and Preferred Stock, the
         Preferred Stock being issuable from time to time in one or more series;

                  WHEREAS, the Board is authorized by the Restated Certificate
         to determine the powers, rights, preferences, limitations and
         restrictions granted to or imposed upon any wholly unissued series of
         Preferred Stock, to fix the number of shares constituting any such
         series, and to determine the designation thereof, or any of them; and

                  WHEREAS, the Board desires, pursuant to its authority as
         aforesaid, to determine and fix the powers, rights, preferences,
         limitations and restrictions relating to a series of Preferred Stock
         and the number of shares constituting, and the designation of, such
         series;

                  NOW, THEREFORE, BE IT RESOLVED, that pursuant to the authority
         vested in the Board in accordance with the provisions of the Restated
         Certificate, a new series of Preferred Stock to be designated "Series A
         Non-Voting Convertible Preferred Stock," be, and it hereby is, created,
         and the Board hereby fixes and determines the designation of, the
         number of shares constituting, and the rights, preferences, privileges
         and restrictions relating to, such series of Preferred Stock as follows
         (all terms used herein which are not otherwise defined shall have the
         meanings set forth in the Restated Certificate):

<PAGE>   2

                  Section 1. Designation of Series, Amount and Par Value. The
         series of preferred stock shall be designated as "Series A Non-Voting
         Convertible Preferred Stock", and the number of shares so designated
         shall be one hundred thousand (100,000) (which number shall not be
         subject to increase without the consent of the holders of at least a
         majority of the Series A Preferred). Each share of Series A Preferred
         shall have a par value of $0.001.

                  Section 2. Voting Rights. Except as otherwise provided herein
         and as otherwise required by law, the holders of the Series A Preferred
         shall not have any right or power to vote. On any matter on which the
         holders of the Series A Preferred shall be entitled to vote, each share
         of Series A Preferred shall entitle the holder thereof to cast a number
         of votes equal to the number of votes that could be cast by a holder of
         the Common Stock into which such share of Series A Preferred is
         convertible on the applicable record date for such vote.

                  Section 3. Dividends. The holders of the Series A Preferred
         shall be entitled to receive, on a pari passu basis with the holders of
         Common Stock, such dividends as may be declared from time to time by
         the Board, provided, however, that for this purpose each share of
         Series A Preferred shall be entitled to receive an amount of dividends
         equal to product of multiplying (a) the number of shares of Common
         Stock into which such share of Series A Preferred is convertible by (b)
         the dividend amount for each share of Common Stock.

                  Section 4. Conversion.

                  (a) Right to Convert. Each share of Series A Preferred shall
         be convertible, at the option of the holder thereof, at any time after
         the date of issuance of such share, into that number of fully paid and
         nonassessable shares of the Common Stock as is determined using the
         Conversion Ratio (as defined in Section 4(e)); provided, however, that
         no such conversion shall become effective unless and until any and all
         legal requirements associated with such conversion, including but not
         limited to any necessary filing under the Hart-Scott-Rodino Antitrust
         Improvements Act of 1976, as amended ("HSR Act"), and the expiration of
         any applicable waiting period thereunder, shall have been satisfied.

                  (b) Conversion at the Election of the Company. All shares of
         Series A Preferred shall be converted into that number of fully paid
         and nonassessable shares of Common Stock as is determined using the
         Conversion Ratio (as defined in Section 4(e)), at any time on or after
         August 1, 2001, upon a resolution of the Board to such effect;
         provided, however, that no such conversion shall become effective
         unless and until any and all legal requirements associated with such
         conversion, including but not limited to any necessary filing under the
         HSR Act and the expiration of any applicable waiting period thereunder,
         shall have been satisfied. Upon the adoption of such a resolution and
         conversion of shares of Series A Preferred into shares of Common Stock
         pursuant to this Section 4(b), the Company shall promptly deliver to
         each former holder of shares of Series A Preferred a notice

                                       2

<PAGE>   3

         ("Conversion Notice") advising such holder of (i) such conversion and
         the effective date thereof; (ii) the number of shares of Common Stock
         issuable to such holder upon conversion of the shares of Series A
         Preferred held by such holder and (iii) the address to which such
         holder should return the certificate or certificates representing the
         shares of Series A Preferred held by such holder in order to receive a
         certificate evidencing the shares of Common Stock issuable to such
         holder upon conversion. The Conversion Notice shall be accompanied by a
         true and correct copy of the resolution of the Board that effected the
         conversion of the Series A Preferred.

                  (c) Conversion Date. The date upon which shares of Series A
         Preferred convert to shares of Common Stock pursuant to Section 4(a) or
         4(b) shall be referred to as the "Conversion Date".

                  (d) Delivery of Certificates for Shares of Common Stock Issued
         Upon Conversion. Upon the conversion of shares of Series A Preferred
         into shares of Common Stock, the Company shall promptly deliver to each
         holder of Series A Preferred a certificate or certificates representing
         the number of shares of Common Stock issued upon the conversion of
         shares of Series A Preferred. Notwithstanding the foregoing, the
         Company shall not be obligated to issue a certificate to a holder
         evidencing the shares of Common Stock issuable to such holder upon
         conversion of such holder's shares of Series A Preferred until after
         the certificate or certificates evidencing such holder's shares of
         Series A Preferred are delivered for conversion to the Company, or the
         holder of such shares of Series A Preferred notifies the Company that
         such certificates have been lost, stolen or destroyed and such holder
         provides an affidavit, in a form reasonably satisfactory to the
         Company, to such effect. The Company shall, upon the request of any
         holder, use its best efforts to deliver any certificate or certificates
         required to be delivered by the Company under this Section 4.

                  (e) Conversion Ratio. Subject to Section 4(f), each share of
         Series A Preferred shall be convertible into that number of shares of
         Common Stock (the "Conversion Ratio") that is determined by this
         Section 4(e):

                      (i) If on the date of issuance of such share of Series A
         Preferred, the closing price of a share of Common Stock on the NASDAQ
         National Market (the "Closing Price") is greater than or equal to $6.00
         per share and less than or equal to $8.00 per share, the Conversion
         Ratio shall be the number obtained by the following formula:

                  Conversion Ratio =     2,166,666
                                       ------------
                                          100,000

                      (ii) If on the date of issuance of such share of Series A
         Preferred, the Closing Price is greater than or equal to $4.00 per
         share and less than $6.00 per share, the Conversion Ratio shall be the
         number obtained by the following formula:

                                       3

<PAGE>   4

          Conversion Ratio =  2,166,666 + [2,083 x (6.00 - Closing Price) x 100]
                             --------------------------------------------------
                                                  100,000

                      (iii) If on the date of issuance of such share of Series A
         Preferred, the Closing Price is less than $4.00 per share, the
         Conversion Ratio shall be the number obtained by the following formula:

              Conversion Ratio =                  25,000,000
                                   --------------------------------------
                                    (Closing Price) x (2.42) x (100,000)

(iv)     If on the date of issuance of such share of Series A Preferred, the
         Closing Price is greater than $8.00 per share, the Conversion Ratio
         shall be the number obtained by the following formula:

              Conversion Ratio =                  25,000,000
                                   --------------------------------------
                                    (Closing Price) x (1.44) x (100,000)

                  (f) Adjustments.

                      (i) Adjustment to Conversion Ratio for Stock Dividends and
         for Combinations or Subdivisions of Common Stock. If the Company, at
         any time or from time to time while any shares of Series A Preferred
         are outstanding, shall (A) declare or pay, without consideration, a
         stock dividend or otherwise make a distribution or distributions on
         shares of its capital stock payable in shares of Common Stock (or
         securities convertible into shares of Common Stock) or in any right to
         acquire Common Stock for no consideration; (B) effect a subdivision or
         split of the outstanding shares of Common Stock into a greater number
         of shares of Common Stock (by stock split, reclassification or
         otherwise than by payment of a dividend in Common Stock or in any right
         to acquire Common Stock); (C) combine or consolidate, by
         reclassification or otherwise, outstanding shares of Common Stock into
         a lesser number of shares or (D) issue by reclassification or exchange
         of the Common Stock any shares of capital stock of the Company, then
         the Conversion Ratio shall be multiplied by a fraction, the numerator
         of which shall be the number of shares of Common Stock outstanding
         after such event and the denominator of which shall be the number of
         shares of Common Stock outstanding before such event. Any adjustment
         made pursuant to this Section 4(f)(i) shall become effective
         immediately after the record date for the determination of stockholders
         entitled to receive such dividend or distribution and shall become
         effective immediately after the effective date in the case of a
         subdivision, combination or reclassification.

                      (ii) Adjustments for Reclassification and Reorganization.
         In case of any reclassification of the Common Stock, or any compulsory
         share exchange pursuant to which the Common Stock is converted into
         other securities, cash or property, the holders of the Series A
         Preferred then outstanding shall have the right thereafter to convert
         such shares only into the shares of stock and other securities, cash
         and property receivable upon or deemed to be held by holders of

                                       4

<PAGE>   5

         Common Stock following such reclassification or share exchange, and the
         holders of the Series A Preferred shall be entitled upon such event to
         receive such amount of securities, cash or property as a holder of the
         number of shares of Common Stock of the Company into which such shares
         of Series A Preferred could have been converted immediately prior to
         such reclassification or share exchange would have been entitled. This
         provision shall similarly apply to successive reclassifications or
         share exchanges.

                      (iii) Certificate as to Adjustments. Whenever the
         Conversion Ratio is adjusted or readjusted pursuant to Section 4(f)(i),
         or there is an adjustment or readjustment pursuant to Section 4(f)(ii),
         the Company shall promptly compute such adjustment or readjustment in
         accordance with the terms hereof and prepare and furnish to each holder
         of Series A Preferred a certificate (an "Adjustment Certificate")
         setting forth (i) such adjustment or readjustment; (ii) the Conversion
         Ratio in effect after such adjustment or readjustment and (iii) a
         detailed statement of the facts requiring such adjustment or
         readjustment. The Company shall, upon the written request at any time
         of any holder of share of Series A Preferred, furnish or cause to be
         furnished to such holder a like certificate setting forth (i) such
         adjustment and readjustment; (ii) the Conversion Price for such series
         of Preferred Stock currently in effect and (iii) the number of shares
         of Common Stock and the amount, if any, of other property that at the
         time would be received upon the conversion of a share of Series A
         Preferred Stock.

                  (g) No Impairment. The Company shall not, by amendment of its
         Restated Certificate or through any reorganization, transfer of assets,
         consolidation, merger, dissolution, issue or sale of securities or any
         other voluntary action, avoid or seek to avoid the observance or
         performance of any of the terms to be observed or performed hereunder
         by the Company, but will at all times in good faith assist in the
         carrying out of all the provisions of this Section 4 and in the taking
         of all such action as may be necessary or appropriate in order to
         protect the conversion rights of the holders of the Series A Preferred
         against impairment.

                  (h) Fractional Shares. Upon a conversion hereunder the Company
         shall not be required to issue stock certificates representing
         fractions of shares of Common Stock, but may if otherwise permitted,
         make a cash payment in respect of any final fraction of a share based
         on the Fair Market Value of a share of Common Stock at such time. If
         the Company elects not, or is unable, to make such a cash payment, the
         holder of a share of Series A Preferred shall be entitled to receive,
         in lieu of the final fraction of a share, one whole fully paid and
         nonassessable share of Common Stock. "Fair Market Value" means on any
         particular date (i) the closing price per share of Common Stock on such
         date on the NASDAQ or on any subsequent market on which the Common
         Stock is then listed or quoted, or if there is no such price on such
         date, then the closing price per share of Common Stock on the NASDAQ or
         on such subsequent market on the date nearest preceding such date; (ii)
         if the Common Stock is not then listed or quoted on the NASDAQ or on
         such subsequent market, the closing price per share of Common Stock in
         the over-the-

                                       5

<PAGE>   6

         counter market, as reported by the National Quotation Bureau
         Incorporated or similar organization or agency succeeding to its
         functions of reporting prices) at the close of business on such date;
         (iii) if the Common Stock is not then reported by the National
         Quotation Bureau Incorporated (or similar organization or agency
         succeeding to its functions of reporting prices), then the average of
         the "Pink Sheet" quotes for the relevant conversion period, as
         determined in good faith by the Company or (iv) if the Common Stock is
         not then publicly traded the fair market value of a share of Common
         Stock as determined in good faith by the Board.

                  (i) Consolidation or Merger. In case of any consolidation or
         merger of the Company with or into another person or in case of any
         sale or transfer to another person of the property of the Company as an
         entirety or substantially as an entirety, then the holders of the
         Series A Preferred then outstanding shall have the right thereafter to
         convert such shares only into the kind and amount of shares of stock
         and other securities and property receivable upon or deemed to be held
         following such consolidation, merger, sale or transfer by a holder of a
         number of shares of the Common Stock into which such shares of Series A
         Preferred might have been converted immediately prior to such
         consolidation, merger, sale or transfer. This provision shall similarly
         apply to successive consolidations, mergers, sales or transfers.

                  (j) Issue Taxes. The issuance of certificates for Common Stock
         upon conversion of Series A Preferred shall be made without charge to
         the holders thereof for any documentary stamp or similar taxes that may
         be payable in respect of the issue or delivery of such certificate;
         provided, however, that the Company shall not be required to pay any
         tax that may be payable in respect of any transfer involved in the
         issuance and delivery of any such certificate upon conversion in a name
         other than that of the holder of such shares of Series A Preferred so
         converted.

                  (k) Reservation of Stock Issuable Upon Conversion. The Company
         shall at all times reserve and keep available out of its authorized but
         unissued shares of Common Stock, solely for the purpose of effecting
         the conversion of the shares of the Series A Preferred, such number of
         its shares of Common Stock as shall from time to time be sufficient to
         effect the conversion of all outstanding shares of the Series A
         Preferred; and if at any time the number of authorized but unissued
         shares of Common Stock shall not be sufficient to effect the conversion
         of all then outstanding shares of the Series A Preferred, the Company
         shall take such corporate action as may, in the opinion of its counsel,
         be necessary to increase its authorized but unissued shares of Common
         Stock to such number of shares as shall be sufficient for such purpose,
         including engaging in efforts to obtain the requisite stockholder
         approval of any necessary amendment to the Restated Certificate. The
         Company will take all such actions as may be required to assure that
         all shares of Common Stock issuable upon conversion of Series A
         Preferred will, upon issuance, be duly authorized, legally and validly
         issued, fully paid and non-assessable and free from all liens,
         encumbrances, equities or claims.

                                       6

<PAGE>   7

                  Section 5. No Reissuance of Series A Preferred. No share or
         shares of Series A Preferred acquired by the Company by reason of
         redemption, purchase, conversion or otherwise shall be reissued.

                  Section 6. Notices. Any and all notices or other
         communications or deliveries to be provided by the holders of the
         Series A Preferred hereunder, shall be in writing and delivered
         personally, by facsimile or sent by a nationally recognized overnight
         courier service, addressed to the attention of the Chief Executive
         Officer of the Company addressed to 301 Congress Avenue, Suite 1850,
         Austin, Texas 78701, Attention: David G. Nance, Chief Executive
         Officer, or to facsimile number (512) 708-9311, or to such other
         address or facsimile number as shall be specified in writing by the
         Company for such purpose. Any and all notices or other communications
         or deliveries to be provided by the Company hereunder shall be in
         writing and delivered personally, by facsimile or sent by a nationally
         recognized overnight courier service, addressed to each holder at the
         facsimile telephone number or address of such holder appearing on the
         books of the Company, or if no such facsimile telephone number or
         address appears, at the principal place of business of the holder. Any
         notice or other communication or deliveries hereunder shall be deemed
         given and effective on the earliest of (i) the date of transmission, if
         such notice or communication is delivered via facsimile at the
         facsimile telephone number specified in this Section 6 prior to 6:30
         p.m. (New York City time); (ii) the date after the date of
         transmission, if such notice or communication is delivered via
         facsimile at the facsimile telephone number specified in this Section 6
         later than 6:30 p.m. (New York City time) on any date and earlier than
         11:59 p.m. (New York City time) on such date; (iii) upon receipt, if
         sent by a nationally recognized overnight courier service or (iv) upon
         actual receipt by the party to whom such notice is required to be
         given.

                  THIRD, that the above resolution applies to 100,000 shares of
         the Company's authorized but unissued Preferred Stock.

                                    * * * * *

                                       7

<PAGE>   8

         IN WITNESS WHEREOF, Introgen Therapeutics, Inc. has caused this
Certificate of Designations of Series A Non-Voting Convertible Preferred Stock
to be signed by the undersigned this 2nd day of July 2001.

                                       /s/ DAVID G. NANCE
                                       ---------------------------------------
                                       David G. Nance, Chief Executive Officer

                                       /s/ RODNEY VARNER
                                       ---------------------------------------
                                       Rodney Varner, Secretary

                                       8

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