Document:

Exhibit 10.10

                                    CONTRACT

     Pretory  USA,  Inc.  (hereinafter  referred  to as "PRTU")  hereby  engages
DeMonte Associates as its investor relations/corporate communications advisor.

     The fee for the 12 month period of the Agreement, commencing on December 1,
1999 will be 5,000.00 per month.  The fee is payable at the commencement of this
contract and on the first of each month in advance of the month worked.

     DeMonte  Associates  shall act as investor  relations  counsel for PRTU and
perform the services enumerated below:

     1.   Analysis  of  PRTU's   business  and  industry,   following   which  a
comprehensive  fact sheet that summarizes PRTU's corporate and financial profile
will be recreated, for distribution to investment professionals and the media.

     2. Work to develop a complete  financial public relations  program designed
to  broaden  recognition  of PRTU in the  financial  community  in the U.S.  and
abroad.

     3. Advise PRTU in its overall  relationship  with the  financial  community
through consultation with its management.

     4.  Planning,  writing and  preparation  of press  releases  and annual and
quarterly reports to shareholders, including the creative graphics and printing,
if required.

     5.  Preparation,  together with  management,  of presentation  material for
meetings with stockholders.

     6. Develop interest in PRTU and its products through placement of articles,
reviews and quotes in financial and trade publications.

     7. Meet with  financial  community on behalf of PRTU,  surveying  essential
analysts,   brokers  and   institutional   investors   throughout  the  country,
maintaining an ongoing  personal  contact program and establishing a schedule of
activities.

     8.  Arrange  meetings  between  management  and  members  of the  financial
community;  including  individual  meetings,  informal group meetings and formal
presentations.

     9. Review PRTU's transfer sheets to identify holdings and identify regional
and institutional strengths.
<PAGE>
     10.  Establish a mailing list for PRTU,  maintain and update the list. This
mailing  list shall be  utilized  by PRTU at any time  during the length of this
contract  and shall  remain the sole  property  of PRTU.  Any names  provided to
DeMonte Associates by PRTU will be supplied with status on an ongoing basis.

     11.  Work with PRTU as  corporate  communications  advisor  and  additional
shareholder   relations  liaison  throughout  crises,  as  they  arise  and  are
rectified.

     12. Provide trade show support and, if required, make arrangements for show
and provide booth support.

     In  addition  to the above,  DeMonte  Associates  will  provide its mailing
address, a separtate phone line, use of its central fax number, and office space
from time to time at no additional  cost as long as this agreement is in effect.
In the event this agreement is terminated, Pretory agrees to negotiate for these
services at the then commercially acceptable rates.

Payment Requirement

     Invoices  will  include  all  out-of-pocket  expenses  incurred  by DeMonte
Associates  on behalf of PRTU for that  month,  plus the monthly fee payable and
due one month in advance,  provided that DeMonte  Associates shall not incur any
expense on behalf of PRTU in any amount  exceeding  $200.00  unless  approved in
writing by PRTU in advance.  Business  Wire expenses will be direct billed PRTU.
Termination of this agreement  shall not relieve PRTU to pay all amounts accrued
prior to such  termination and shall not limit DeMonte  Associates from pursuing
other remedies which may be available to it.

     In the event of any  dispute,  the  parties  must  resort  to the  American
Association of Arbitration in New York City.  Either party may make application.
This  Association  shall  have  power to decide  who shall pay  costs,  fees and
disbursements, in addition to making an award.
<PAGE>
Term

     This  agreement  shall  commence upon  execution of this document and shall
continue in force for a period of twelve months.

Out-of-Pocket Expenses

     1. PRTU  shall  reimburse  DeMonte  Associates  as to any and all  expenses
incurred and expenditures  made on behalf of PRTU. These expenses  include,  but
are not limited to, the following:  travel and miscellaneous  expenses (postage,
photocopy, fax, federal express and messenger service).

     2. If, as an agent,  DeMonte  Associates  places paid media advertising (at
PRTU's discretion, media and production costs must be paid to DeMonte Associates
in advance.

     PRTU agrees to and hereby does  indemnify  DeMonte  Associates  against any
damages,  costs and expenses,  including reasonable attorney's fees, incurred in
defending  against any legal  action  arising  out of the  release of  materials
previously  cleared and approved by PRTU,  and hereby  expressly  holds  DeMonte
Associates harmless from any such damages, costs and expenses.

     PRTU  acknowledges  that it has read this  agreement  between the  parties,
which  supersedes all proposals or prior  agreements,  oral or written,  and all
other communications  between the parties relating to the subject matter of this
agreement.

     DeMonte  Associates  agrees to exercise due care to prevent  disclosure  of
PRTU's  proprietary  information to any third party,  authorization for further,
internal dissemination within DeMonte Associates shall be limited to those whose
duties justify their need to know such  information,  and then only with a clear
understanding   that  these  employees  of  their  obligation  to  maintain  the
proprietary status of such information.

     This  Agreement  may be  terminated  by either  party upon 30 days  written
notice.

  By:_______________________________           Date:________________
      Pretory USA, Inc.

  By:________________________________          Date:_________________
      DeMonte Associates<PAGE>   1

                                                                    EXHIBIT 10.1

                  SECOND AMENDED AND RESTATED VOTING AGREEMENT

        THIS AMENDED AND RESTATED VOTING AGREEMENT is made as of the th day of
September, 1994, by and among SIGNAL PHARMACEUTICALS, INC., a California
corporation (the "Company"), Accel IV L.P., Accel Japan, Accel Keiretsu L.P.,
Accel Investors '93 L.P., Ellmore C. Patterson Partners, Prosper Partners
(hereinafter collectively referred to as "Accel Partners"), Kleiner Perkins
Caufield & Byers VI and KPCB VI Founders Fund (hereinafter collectively referred
to as "Kleiner Perkins Caufield & Byers"), Venrock Associates and Harry F.
Hixson, Jr. (together Accel Partners, Kleiner Perkins Caufield & Byers, Venrock
Associates and Harry F. Hixson, Jr. may be referred to collectively, as the "Old
Investors") and the parties listed on Schedule A, attached hereto, (the "New
Investors"). The Old Investors and the New Investors are herein referred to
collectively as the "Investors" or the "Voting Parties". All terms not otherwise
defined herein shall have the meaning ascribed such terms in the Series C
Preferred Stock Purchase Agreement or the Investors' Rights Agreement among the
Company and certain investors of even date herewith.

        THE PARTIES HEREBY AGREE AS FOLLOWS:

        1.      Agreement to Vote. During the term of this Agreement, the Voting
Parties agree to vote all of the shares of the Company's voting securities now
or hereafter owned by them, whether beneficially or otherwise (the "Shares"), at
any regular or special meeting of stockholders of the Company, or, in lieu of
any such meeting, to give their written consent, in the election or removal of
directors of the Company as provided in this Agreement.

        2.      Election of Directors After the First Closing.

        (a)     During the term of this Agreement, with respect to the election
of the directors of the Company that the holders of Preferred Stock (voting
together as a class) are entitled to elect, the Voting Parties agree to vote to
elect (i) one person designated by Accel Partners, such person to initially be
Luke Evnin; (ii) one person designated by Venrock Associates, such person to
initially be Patrick Latterell; (iii) one person designated by Kleiner Perkins
Caufield & Byers, such person to initially be Brook Byers; and (iv) one person
designated by InterWest Partners, such person to initially be Arnold Oronsky.

        (b)     Notwithstanding the provisions of subsection (a) above, Accel
Partners, Venrock Associates, Kleiner Perkins Caufield & Byers, and InterWest
Partners, respectively, shall forfeit their right to designate a nominee to the
Board of Directors if at any time following the First Closing, such Investor
holds less than 50% of the

<PAGE>   2

aggregate number of shares of Series C Preferred Stock set forth opposite such
Investor's name on Schedule B attached hereto.

        (c)     In the event any of Accel Partners, Venrock Associates, Kleiner
Perkins Caufield & Byers or InterWest Partners forfeits their right to designate
a nominee to the Board of Directors pursuant to subsection (b) above, then the
nominee for the resulting vacancy shall be designated by the holders of a
majority of the outstanding Preferred Stock and all Voting Parties hereby agree
to vote to elect such designee.

        3.      Replacement of Director. In the event of any termination or
resignation of any Director, the Voting Parties shall take all actions necessary
and appropriate to cause such vacancy to be filled in accordance with the
provisions hereof.

        4.      Successors in Interest of the Parties.

        (a)     The provisions of this Agreement shall be binding upon the
successors in interest of the Voting Parties to any of the Shares. The Company
shall not permit the transfer of any Shares on its books or issue a new
certificate representing any Shares unless and until the person to whom such
security is to be transferred shall have executed a written agreement pursuant
to which such person becomes a party to this Agreement and agrees to be bound by
all the provisions hereof as if such person was a Voting Party hereunder.

        (b)     Each certificate representing any Shares shall be endorsed by
the Company with a legend reading substantially as follows:

        The Shares evidenced hereby are subject to a Voting Agreement dated as
        of September 8, 1994, (a copy of which may be obtained upon written
        request from the issuer), and by accepting any interest in such shares
        the person accepting such interest shall be deemed to agree to and shall
        become bound by all the provisions of said Voting Agreement.

        5.      Covenants of the Company. So long as the Voting Parties are
        entitled to the rights granted to them under this Voting Agreement, the
        Company agrees to use its best efforts to ensure that such rights are
        effective and that the Voting Parties enjoy the benefits thereof. Such
        actions include, without limitation, the use of the Company's best
        efforts to cause the nomination and election of the Directors as
        provided in Section 2. The Company will not, by any voluntary action,
        avoid or seek to avoid the observance or performance of any of the terms
        to be performed hereunder by the Company, but will at all times in good
        faith assist in the carrying out of all of the provisions of this
        Agreement and in the taking of all such actions as may be necessary,
        appropriate or reasonably requested by the holders of a majority of the
        outstanding voting securities held by the Voting Parties assuming
        exercise and conversion of all

                                       2.
<PAGE>   3

outstanding securities in order to protect the rights of the parties hereunder
against impairment.

        6.      No Liability for Election of Recommended Directors. Neither the
Company, nor the Investors, nor any officer, director, shareholder, partner,
employee or agent of such party makes any representation or warranty as to the
fitness or competence of any nominee designated pursuant to Section 2 above to
serve on the Board of Directors of the Company by virtue of such party's
execution of this Voting Agreement or by the act of such party in voting for the
nominees.

        7.      Grant of Proxy. Should the provisions of this Voting Agreement
be construed to constitute the granting of proxies, such proxies shall be deemed
coupled with an interest and, to the extent permitted by law, are irrevocable
for the term of this Voting Agreement.

        8.      Specific Enforcement. It is agreed and understood that monetary
damages would not adequately compensate an injured Voting Party for the breach
of this Voting Agreement by any Voting Party, that this Voting Agreement shall
be specifically enforceable, and that any breach or threatened breach of this
Voting Agreement shall be the proper subject of a temporary or permanent
injunction or restraining order. Further, each Voting Party hereto waives any
claim or defense that there is an adequate remedy at law for such breach or
threatened breach.

        9.      Manner of Voting. The voting of shares pursuant to this Voting
Agreement may be effected in person, by proxy, by written consent, or in any
other manner permitted by applicable law.

        10.     Termination. This Agreement shall terminate upon the earlier of
(i) the date the Company has consummated a bona fide, firmly underwritten public
offering of shares of Common Stock, registered under the Act pursuant to a
registration statement on Form S-1, at an offering price of at least $5.00 per
share (appropriately adjusted for any stock split, dividend, combination or
other recapitalization) and $12,500,000 of aggregate proceeds, (ii) the date
which is ten (10) years after the date of this Agreement, or (iii) the date the
Voting Parties lose the right to elect 4 directors to the Board of Directors
pursuant to Article III subsection (B)(5) of the Amended and Restated Articles
of Incorporation in effect as of the date of the First Closing.

        11.     Amendment of Prior Voting Agreement. The undersigned Old
Investors, constituting all of the parties to that certain Amended and Restated
Voting Agreement dated as of April 12, 1993 by and between the Company and the
Old Investors (the "First Amended and Restated Voting Agreement") hereby agree
that upon the execution by them of this Agreement, the First Amended and
Restated Voting Agreement shall be deemed amended and restated in its entirety
to read as set forth in

                                       3.
<PAGE>   4

this Agreement and this Agreement shall supersede in its entirety the First
Amended and Restated Voting Agreement.

        12.     Amendments and Waivers. Any term hereof, may be amended and the
observance of any term hereof may be waived (either generally or in a particular
instance and either retroactively or prospectively) only with the written
consent of the Company and the holders of a majority of the outstanding voting
securities held by the Voting Parties (assuming exercise or conversion of all
outstanding securities). Any amendment or waiver so effected shall be binding
upon the parties hereto.

        13.     Stock Splits, Stock Dividends, etc. In the event of any stock
split, stock dividend, recapitalization, reorganization, or the like, any
securities issued with respect to the Shares shall become Shares for purposes of
this Agreement and shall be endorsed with the legend set forth in Section 5(b)
hereof.

        14.     Severability. Whenever possible, each provision of this
Agreement shall be interpreted in such manner as to be effective and valid under
applicable law, but if any provision of this Agreement shall be held to be
prohibited by or invalid under applicable law, such provision shall be
ineffective only to the extent of such prohibition or invalidity, without
invalidating the remainder of such provision or the remaining provisions of this
Agreement.

        15.     Governing Law. This Agreement shall be governed by and construed
under the laws of the State of California as applied to contracts among
California residents entered into and to be performed entirely within
California.

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

        17.     Successors and Assigns. Except as otherwise expressly provided
in this Agreement, the provisions hereof shall inure to the benefit of, and be
binding upon, the successors and assigns of the parties hereto.

                                       4.
<PAGE>   5

        IN WITNESS WHEREOF, the parties hereto have executed this Agreement as
of the day and year hereinabove first written.

                                        SIGNAL PHARMACEUTICALS, INC.

                                        By: /s/ ALAN J. LEWIS
                                            ------------------------------------
                                            Alan J. Lewis, President

                                        INVESTORS:

                                        ACCEL IV L.P.

                                        By: Accel IV Associates, L.P.
                                        Its General Partner

                                        By:
                                            ------------------------------------
                                            General Partner

                                        ACCEL JAPAN

                                        By: Accel Japan Associates, L.P.
                                            ------------------------------------
                                        Its General Partner

                                        By:
                                            ------------------------------------
                                            General Partner

                      SIGNATURE PAGE FOR SECOND AMENDED AND
                            RESTATED VOTING AGREEMENT

<PAGE>   6
        IN WITNESS WHEREOF, the parties hereto have executed this Agreement as
of the day and year hereinabove first written.

                                        SIGNAL PHARMACEUTICALS, INC.

                                        By:
                                            ------------------------------------
                                            Alan J. Lewis, President

                                        INVESTORS:

                                        ACCEL IV L.P.

                                        By: Accel IV Associates, L.P.
                                        Its General Partner

                                        By:     [SIG]
                                            ------------------------------------
                                            General Partner

                                        ACCEL JAPAN

                                        By: Accel Japan Associates, L.P.
                                            ------------------------------------
                                        Its General Partner

                                        By:     [SIG]
                                            ------------------------------------
                                            General Partner

                      SIGNATURE PAGE FOR SECOND AMENDED AND
                            RESTATED VOTING AGREEMENT

<PAGE>   7

                                        ACCEL KEIRETSU L.P.

                                        By: Accel Partners & Co., Inc.
                                            Its General Partner

                                        By:        [SIG]
                                            ------------------------------------
                                            General Partner

                                        ACCEL INVESTORS '93 L.P.

                                        By:        [SIG]
                                            ------------------------------------
                                            General Partner

                                        ELLMORE C. PATTERSON PARTNERS

                                        By:         [SIG]
                                            ------------------------------------
                                            General Partner

                                        PROSPER PARTNERS

                                        By:         [SIG]
                                            ------------------------------------
                                            Attorney-In-Fact

                      SIGNATURE PAGE FOR SECOND AMENDED AND
                            RESTATED VOTING AGREEMENT

<PAGE>   8

                                        VENROCK ASSOCIATES

                                        By:       [SIG]
                                            ------------------------------------
                                            General Partner

                      SIGNATURE PAGE FOR SECOND AMENDED AND
                            RESTATED VOTING AGREEMENT

<PAGE>   9

                                        KLEINER PERKINS CAUFIELD & BYERS VI

                                        By: KLEINER PERKINS CAUFIELD &
                                            BYERS VI ASSOCIATES, General
                                            Partner

                                        By:         [SIG]
                                            ------------------------------------

                                        KPCB VI FOUNDERS FUND

                                        By: KLEINER PERKINS CAUFIELD &
                                            BYERS VI ASSOCIATES, General
                                            Partner

                                        By:         [SIG]
                                            ------------------------------------

                      SIGNATURE PAGE FOR SECOND AMENDED AND
                            RESTATED VOTING AGREEMENT

<PAGE>   10

                                        HIXSON FAMILY TRUST DATED 08/25/86

                                        By: [SIG]
                                            ------------------------------------
                                            Trustee

                      SIGNATURE PAGE FOR SECOND AMENDED AND
                            RESTATED VOTING AGREEMENT

<PAGE>   11

                                        INTERWEST PARTNERS V

                                        By: [SIG]
                                            ------------------------------------

                                        Its: General Partner
                                             -----------------------------------

                                        INTERWEST INVESTORS V

                                        By: [SIG]
                                            ------------------------------------
                                        Its: General Partner
                                             -----------------------------------

                      SIGNATURE PAGE FOR SECOND AMENDED AND
                            RESTATED VOTING AGREEMENT

<PAGE>   12

                                        OXFORD BIOSCIENCE PARTNERS L.P.
                                        By:  OBP Management L.P.
                                        Its: General Partner

                                        By:  /s/EDMUND M. OLIVIER
                                             -----------------------------------
                                             Edmund M. Olivier
                                        Its: General Partner

                                        OXFORD BIOSCIENCE PARTNERS
                                        (BERMUDA) LIMITED PARTNERSHIP
                                        By: OBP Management Bermuda) Limited
                                            Partnership
                                        Its: General Partner

                                        By:  /s/EDMUND M. OLIVIER
                                             -----------------------------------
                                             Edmund M. Olivier
                                        Its: General Partner

                                        OXFORD BIOSCIENCE PARTNERS
                                        (ADJUNCT) L.P.
                                        By: OBP Management L.P.
                                        Its: General Partner

                                        By:  /s/EDMUND M. OLIVIER
                                             -----------------------------------
                                             Edmund M. Olivier
                                        Its: General Partner

                      SIGNATURE PAGE FOR SECOND AMENDED AND
                            RESTATED VOTING AGREEMENT

<PAGE>   13

                                        USVP ENTREPRENEUR PARTNERS II, L.P.

                                        By Presidio Management Group IV, L.P.
                                        Its General Partner

                                        By:  [SIG]
                                            ------------------------------------
                                        Its: Attorney In Fact
                                             -----------------------------------

                                        SECOND VENTURES II, L.P.

                                        By Presidio Management Group IV, L.P.
                                        Its General Partner

                                        By:  [SIG]
                                            ------------------------------------
                                        Its: Attorney In Fact
                                             -----------------------------------

                                        U.S. VENTURE PARTNERS IV, L.P.

                                        By Presidio Management Group IV, L.P.
                                        Its General Partner

                                        By:  [SIG]
                                            ------------------------------------
                                        Its: Attorney In Fact
                                             -----------------------------------

                      SIGNATURE PAGE FOR SECOND AMENDED AND
                            RESTATED VOTING AGREEMENT

<PAGE>   14

                                        VERTICAL MEDICAL PARTNERS, L.P.

                                        By:  [SIG]
                                             -----------------------------------
                                        Its: General Partner
                                             -----------------------------------

                      SIGNATURE PAGE FOR SECOND AMENDED AND
                            RESTATED VOTING AGREEMENT

<PAGE>   15

                                   SCHEDULE A

InterWest Partners V, Interwest Investors V (InterWest Partners V and
InterWest Investors V, collectively, "InterWest")
Oxford Bioscience Partners L.P.
Oxford Bioscience Partners (Bermuda) Limited Partnership
Oxford Bioscience Partners (Adjunct) L.P.
USVP Entrepreneur Partners II, L.P.
Second Ventures II, L.P.
U.S. Venture Partners IV, L.P.
Vertical Medical Partners, L.P.

                      SIGNATURE PAGE FOR SECOND AMENDED AND
                            RESTATED VOTING AGREEMENT

<PAGE>   16

                          SIGNAL PHARMACEUTICALS, INC.

                              AGREEMENT TO BE BOUND
                                 BY THE TERMS OF
                  SECOND AMENDED AND RESTATED VOTING AGREEMENT

        Reference is made to that certain Second Amended and Restated Voting
Agreement (the "Voting Agreement"), dated as of September 8, 1994, between
Signal Pharmaceuticals, Inc. (the "Company") and certain investors, including
the Hixson Family Trust dated August 25, 1986 (the "Trust"), which placed
certain restrictions on the voting and transfer of all of the Series A, Series
B, and Series C Preferred Shares of the Company owned by the Trust (the
"Shares"). A copy of the Voting Agreement is attached hereto as Exhibit A.

        WHEREAS, the Voting Agreement provides that the Shares may not be
transferred by the Trust, as represented by its trustee, Harry F. Hixson, Jr.,
unless the transferee agrees to be bound by the provisions of the Voting
Agreement; and

        WHEREAS, pursuant to the terms of a dissolution of marriage judgment,
the Trust is seeking to transfer (i) sixty-two thousand five hundred (62,500)
shares of Series A Preferred Stock, (ii) one hundred twenty-five thousand
(125,000) shares of Series B Preferred Stock, and (iii) one hundred ten thousand
(110,000) shares of Series C Preferred Stock (the "Transferred Shares") to the
undersigned;

        NOW, THEREFORE, to induce the Company to effect the transfer of the
Transferred Shares to the undersigned:

        1. The undersigned hereby agrees to be bound by all of the provisions of
the Voting Agreement as if the undersigned was an original signatory thereto and
hereby acknowledges that, notwithstanding the transfer of such Transferred
Shares to the undersigned, such Transferred Shares shall remain subject to the
restrictions on transfer, voting rights and all of the other provisions of the
Voting Agreement.

        2. The undersigned understands and agrees that all certificates
evidencing the Settlement Shares to be issued to the undersigned may bear the
following legend:

        THE SHARES EVIDENCED HEREBY ARE SUBJECT TO CERTAIN VOTING AGREEMENT(S)
AS AMENDED FROM TIME TO TIME (COPIES OF WHICH MAY BE OBTAINED UPON WRITTEN
REQUEST FROM THE ISSUER), AND BY ACCEPTING ANY INTEREST IN SUCH SHARES THE
PERSON ACCEPTING SUCH INTEREST SHALL BE DEEMED TO AGREE TO AND SHALL BECOME
BOUND BY ALL THE PROVISIONS OF SAID VOTING AGREEMENT(S).

Dated as of August ____, 1997

                                        ----------------------------------------
                                        GEORGIANA B. HIXSON
                                        1 Moss Landing
                                        Laguna Niguel, CA  92677

<PAGE>   17

                                   EXHIBIT A

                                VOTING AGREEMENT

<PAGE>   18

                          SIGNAL PHARMACEUTICALS, INC.

                              AGREEMENT TO BE BOUND
                                 BY THE TERMS OF
                  SECOND AMENDED AND RESTATED VOTING AGREEMENT

        Reference is made to that certain Second Amended and Restated Voting
Agreement (the "Voting Agreement"), dated as of September 8, 1994, between
Signal Pharmaceuticals, Inc. (the "Company") and certain investors, including
the Hixson Family Trust dated August 25, 1986 (the "Trust"), which placed
certain restrictions on the voting and transfer of all of the Series A, Series
B, and Series C Preferred Shares of the Company owned by the Trust (the
"Shares"). A copy of the Voting Agreement is attached hereto as Exhibit A.

        WHEREAS, the Voting Agreement provides that the Shares may not be
transferred by the Trust, as represented by its trustee, Harry F. Hixson, Jr.,
unless the transferee agrees to be bound by the provisions of the Voting
Agreement; and

        WHEREAS, pursuant to the terms of a dissolution of marriage judgment,
the Trust is seeking to transfer (i) sixty-two thousand five hundred (62,500)
shares of Series A Preferred Stock, (ii) one hundred twenty-five thousand
(125,000) shares of Series B Preferred Stock, and (iii) one hundred ten thousand
(110,000) shares of Series C Preferred Stock (collectively, the "Transferred
Shares") to the undersigned;

        NOW, THEREFORE, to induce the Company to effect the transfer of the
Transferred Shares to the undersigned:

        1. The undersigned hereby agrees to be bound by all of the provisions of
the Voting Agreement as if the undersigned was an original signatory thereto and
hereby acknowledges that, notwithstanding the transfer of such Transferred
Shares to the undersigned, such Transferred Shares shall remain subject to the
restrictions on transfer, voting rights and all of the other provisions of the
Voting Agreement.

        2. The undersigned understands and agrees that all certificates
evidencing the Settlement Shares to be issued to the undersigned may bear the
following legend:

        THE SHARES EVIDENCED HEREBY ARE SUBJECT TO CERTAIN VOTING AGREEMENT(S)
AS AMENDED FROM TIME TO TIME (COPIES OF WHICH MAY BE OBTAINED UPON WRITTEN
REQUEST FROM THE ISSUER), AND BY ACCEPTING ANY INTEREST IN SUCH SHARES THE
PERSON ACCEPTING SUCH INTEREST SHALL BE DEEMED TO AGREE TO AND SHALL BECOME
BOUND BY ALL THE PROVISIONS OF SAID VOTING AGREEMENT(S).

Dated as of August ____, 1997

                                        ----------------------------------------
                                        HARRY F. HIXSON, JR., TRUSTEE
                                        HARRY F. HIXSON, JR. SEPARATE PROPERTY
                                        TRUST DATED 12/15/95

<PAGE>   19

                                    EXHIBIT A

                                VOTING AGREEMENT

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