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                                                                     EXHIBIT 4.3

                                                                  EXECUTION COPY

                              --------------------

                          REGISTRATION RIGHTS AGREEMENT

                         DATED AS OF SEPTEMBER 19, 2003

                                      AMONG

                           INNOVA, S. DE R.L. DE C.V.

                                       AND

                           J.P. MORGAN SECURITIES INC.

                         CITIGROUP GLOBAL MARKETS, INC.

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                          REGISTRATION RIGHTS AGREEMENT

         This Registration Rights Agreement (this "Agreement") is made and
entered into this 19th day of September, 2003, among Innova S. de R.L. de C.V.,
a limited liability company (sociedad de responsabilidad limitada de capital
variable) organized under the laws of the United Mexican States (the "Company"),
J.P. Morgan Securities Inc. ("J.P. Morgan") and Citigroup Global Markets, Inc.
("Citigroup Global Markets") (collectively, the "Initial Purchasers").

         This Agreement is made pursuant to the Purchase Agreement, dated
September 12, 2003, among the Company and the Initial Purchasers (the "Purchase
Agreement"), which provides for the sale by the Company to the Initial
Purchasers of an aggregate of $300,000,000 principal amount of the Company's
9.375% Senior Notes due 2013 (the "Securities"). In order to induce the Initial
Purchasers to enter into the Purchase Agreement, the Company has agreed to
provide to the Initial Purchasers and their direct and indirect transferees the
registration rights set forth in this Agreement. The execution of this Agreement
is a condition to the closing under the Purchase Agreement.

         In consideration of the foregoing, the parties hereto agree as follows:

         1. Definitions.

         As used in this Agreement, the following capitalized defined terms
shall have the following meanings:

         "1933 Act" shall mean the Securities Act of 1933, as amended from time
to time.

         "1934 Act" shall mean the Securities Exchange Act of l934, as amended
from time to time.

         "Business Day" shall mean a day that is not a Saturday, a Sunday, or a
day on which banking institutions in New York, New York or Luxembourg are
authorized or required to be closed.

         "Closing Date" shall mean the Closing Time as defined in the Purchase
Agreement.

         "Company" shall have the meaning set forth in the preamble and shall
also include the Company's successors.

         "Depositary" shall mean The Depository Trust Company, or any other
depositary appointed by the Company, provided, however, that such depositary
must have an address in the Borough of Manhattan, in The City of New York.

         "Exchange Offer" shall mean the exchange offer by the Company of
Exchange Securities for Registrable Securities pursuant to Section 2.1 hereof.

         "Exchange Offer Registration" shall mean a registration under the 1933
Act effected pursuant to Section 2.1 hereof.

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         "Exchange Offer Registration Statement" shall mean an exchange offer
registration statement on Form F-4 (or, if applicable, on another appropriate
form), and all amendments and supplements to such registration statement,
including the Prospectus contained therein, all exhibits thereto and all
documents incorporated by reference therein.

         "Exchange Period" shall have the meaning set forth in Section 2.1
hereof.

         "Exchange Securities" shall mean the 9.375% Senior Notes due 2013
issued by the Company under the Indenture containing terms identical to the
Securities in all material respects (except for references to certain interest
rate provisions, restrictions on transfers and restrictive legends), to be
offered to Holders of Securities in exchange for Registrable Securities pursuant
to the Exchange Offer.

         "Holder" shall mean an Initial Purchaser, for so long as it owns any
Registrable Securities, and each of its successors, assigns and direct and
indirect transferees who become registered owners of Registrable Securities
under the Indenture and each Participating Broker-Dealer that holds Exchange
Securities for so long as such Participating Broker-Dealer is required to
deliver a prospectus meeting the requirements of the 1933 Act in connection with
any resale of such Exchange Securities.

         "Indenture" shall mean the Indenture relating to the Securities dated
the date hereof among the Company, The Bank of New York, as Trustee, Registrar,
Paying Agent and Transfer Agent and The Bank of New York (Luxembourg), as
Luxembourg Paying Agent and Transfer Agent as the same may be amended,
supplemented, waived or otherwise modified from time to time in accordance with
the terms thereof.

         "Initial Purchaser" or "Initial Purchasers" shall have the meaning set
forth in the preamble.

         "Majority Holders" shall mean the Holders of a majority of the
aggregate principal amount of Outstanding (as defined in the Indenture)
Registrable Securities; provided that whenever the consent or approval of
Holders of a specified percentage of Registrable Securities is required
hereunder, Registrable Securities held by the Company and other obligors on the
Securities or any Affiliate (as defined in the Indenture) of the Company shall
be disregarded in determining whether such consent or approval was given by the
Holders of such required percentage amount.

         "Participating Broker-Dealer" shall mean any of J.P. Morgan and
Citigroup Global Markets and any other broker-dealer which makes a market in the
Securities and exchanges Registrable Securities in the Exchange Offer for
Exchange Securities.

         "Person" shall mean an individual, partnership (general or limited),
corporation, limited liability company, trust or unincorporated organization, or
a government or agency or political subdivision thereof.

         "Private Exchange" shall have the meaning set forth in Section 2.1
hereof.

         "Private Exchange Securities" shall have the meaning set forth in
Section 2.1 hereof.

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         "Prospectus" shall mean the prospectus included in a Registration
Statement, including any preliminary prospectus, and any such prospectus as
amended or supplemented by any prospectus supplement, including any such
prospectus supplement with respect to the terms of the offering of any portion
of the Registrable Securities covered by a Shelf Registration Statement, and by
all other amendments and supplements to a prospectus, including post-effective
amendments, and in each case including all material incorporated by reference
therein.

         "Purchase Agreement" shall have the meaning set forth in the preamble.

         "Registrable Securities" shall mean the Securities and, if issued, the
Private Exchange Securities; provided, however, that Securities and, if issued,
the Private Exchange Securities, shall cease to be Registrable Securities when
(i) a Registration Statement with respect to such Securities shall have been
declared effective under the 1933 Act and such Securities shall have been
disposed of pursuant to such Registration Statement, (ii) such Securities have
been sold to the public pursuant to Rule l44 (or any similar provision then in
force, but not Rule 144A) under the 1933 Act, (iii) such Securities shall have
ceased to be outstanding or (iv) the Exchange Offer is consummated (except in
the case of Securities purchased from the Company that continue to be held by
the Initial Purchasers).

         "Registration Expenses" shall mean any and all expenses incident to
performance of or compliance by the Company with this Agreement, including
without limitation: (i) all SEC, stock exchange or National Association of
Securities Dealers, Inc. (the "NASD") registration and filing fees, including,
if applicable, the fees and expenses of any "qualified independent underwriter"
(and its counsel) that is required to be retained by any holder of Registrable
Securities in accordance with the rules and regulations of the NASD, (ii) all
fees and expenses incurred in connection with compliance with state securities
or blue sky laws and compliance with the rules of the NASD (including reasonable
fees and disbursements of counsel for any underwriters or Holders in connection
with blue sky qualification of any of the Exchange Securities or Registrable
Securities), (iii) all expenses of any Persons in preparing or assisting in
preparing, word processing, printing and distributing any Registration
Statement, any Prospectus, any amendments or supplements thereto, any
underwriting agreements, securities sales agreements and other documents
relating to the performance of and compliance with this Agreement, (iv) all fees
and expenses incurred in connection with the listing, if any, of any of the
Registrable Securities on any securities exchange or exchanges, (v) all rating
agency fees, (vi) the fees and disbursements of counsel for the Company and of
the independent public accountants of the Company, including the expenses of any
special audits or "cold comfort" letters required by or incident to such
performance and compliance, (vii) the fees and expenses of the Trustee, and any
escrow agent or custodian, (viii) the reasonable expenses of the Initial
Purchasers in connection with the Exchange Offer, including the reasonable fees
and expenses of counsel to the Initial Purchasers in connection therewith, (ix)
the reasonable fees and disbursements of Sidley Austin Brown & Wood LLP, counsel
representing the Holders of Shelf Registrable Securities or Special Counsel and
(x) the reasonable fees and disbursements of the underwriters customarily
required to be paid by issuers or sellers of securities and the fees and
expenses of any special experts retained by the Company in connection with any
Registration Statement, but excluding underwriting discounts and commissions and
transfer taxes, if any, relating to the sale or disposition of Registrable
Securities by a Holder.

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         "Registration Statement" shall mean any registration statement of the
Company which covers any of the Exchange Securities or Registrable Securities
pursuant to the provisions of this Agreement, and all amendments and supplements
to any such Registration Statement, including post-effective amendments, in each
case including the Prospectus contained therein, all exhibits thereto and all
material incorporated by reference therein.

         "SAS 72" shall mean Statement on Auditing Standards No. 72.

         "SEC" shall mean the United States Securities and Exchange Commission
or any successor agency or government body performing the functions currently
performed by the United States Securities and Exchange Commission.

         "Shelf Registrable Securities" shall have the meaning set forth in
Section 2.5.

         "Shelf Registration" shall mean a registration effected pursuant to
Section 2.2 hereof.

         "Shelf Registration Statement" shall mean a "shelf" registration
statement of the Company pursuant to the provisions of Section 2.2 of this
Agreement which covers all of the Registrable Securities or all of the Private
Exchange Securities on an appropriate form under Rule 415 under the 1933 Act, or
any similar rule that may be adopted by the SEC, and all amendments and
supplements to such registration statement, including post-effective amendments,
in each case including the Prospectus contained therein, all exhibits thereto
and all material incorporated by reference therein.

         "Special Counsel" shall have the meaning set forth in Section 3(g)(i).

         "TIA" shall have the meaning set forth in Section 2.1.

         "Trustee" shall mean the trustee with respect to the Securities under
the Indenture.

         2.  Registration Under the 1933 Act.

         2.1 Exchange Offer. The Company shall, for the benefit of the Holders,
at the Company's cost, (A) use its best efforts to file with the SEC an Exchange
Offer Registration Statement within 90 days on an appropriate form under the
1933 Act with respect to a proposed Exchange Offer and the issuance and delivery
to the Holders, in exchange for the Registrable Securities (other than Private
Exchange Securities), of a like principal amount of Exchange Securities, (B) use
its reasonable best efforts to cause the Exchange Offer Registration Statement
to be declared effective under the 1933 Act within 150 days of the Closing Date,
(C) use its best efforts to keep the Exchange Offer Registration Statement
effective until the closing of the Exchange Offer, (D) use its best efforts to
cause the Exchange Offer to be consummated not later than 180 days following the
Closing Date and (E) for a period of 90 days following the consummation of the
exchange offer, to make available a prospectus meeting the requirements of the
Securities Act to any such participating broker-dealer for use in connection
with any resale of any exchange notes acquired in the exchange offer. The
Exchange Securities will be issued under the Indenture. Upon the effectiveness
of the Exchange Offer Registration Statement, the Company shall promptly
commence the Exchange Offer, it being the objective of such Exchange Offer to
enable each Holder eligible and electing to exchange Registrable Securities for

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Exchange Securities (assuming that such Holder (a) is not an affiliate of the
Company within the meaning of Rule 405 under the 1933 Act, (b) is not a
broker-dealer tendering Registrable Securities acquired directly from the
Company for its own account, (c) acquired the Exchange Securities in the
ordinary course of such Holder's business and (d) has no arrangements or
understandings with any Person to participate in the Exchange Offer for the
purpose of distributing the Exchange Securities) to transfer such Exchange
Securities from and after their receipt without any limitations or restrictions
under the 1933 Act and under state securities or blue sky laws.

         In connection with the Exchange Offer, the Company shall:

                  (a) mail as promptly as practicable to each Holder a copy of
the Prospectus forming part of the Exchange Offer Registration Statement,
together with an appropriate letter of transmittal and related documents;

                  (b) keep the Exchange Offer open for acceptance for a period
of not less than 20 Business Days after the date notice thereof is mailed to the
Holders (or longer if required by applicable law) (such period referred to
herein as the "Exchange Period");

                  (c) utilize the services of the Depositary for the Exchange
Offer;

                  (d) permit Holders to withdraw tendered Registrable Securities
at any time prior to the close of business, New York City time, on the last
Business Day of the Exchange Period, by sending to the institution specified in
the notice, a telegram, telex, facsimile transmission or letter setting forth
the name of such Holder, the principal amount of Registrable Securities
delivered for exchange, and a statement that such Holder is withdrawing such
Holder's election to have such Securities exchanged;

                  (e) notify each Holder that any Registrable Security not
tendered will remain outstanding and continue to accrue interest, but will not
retain any rights under this Agreement (except in the case of the Initial
Purchasers and Participating Broker-Dealers as provided herein); and

                  (f) otherwise comply in all material respects with all
applicable laws relating to the Exchange Offer.

         If, prior to consummation of the Exchange Offer, the Initial Purchasers
hold any Securities acquired by them and having the status of an unsold
allotment in the initial distribution, the Company upon the request of any
Initial Purchaser shall, simultaneously with the delivery of the Exchange
Securities in the Exchange Offer, issue and deliver to such Initial Purchaser in
exchange (the "Private Exchange") for the Securities held by such Initial
Purchaser, a like principal amount of debt securities of the Company on a senior
basis, that are identical (except that such securities shall bear appropriate
transfer restrictions) to the Exchange Securities (the "Private Exchange
Securities").

         The Exchange Securities and the Private Exchange Securities shall be
issued under (i) the Indenture or (ii) an indenture identical in all material
respects to the Indenture and which, in either case, has been qualified under
the Trust Indenture Act of 1939, as amended ("TIA"), or is

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exempt from such qualification and shall provide that the Exchange Securities
shall not be subject to the transfer restrictions set forth in the Indenture but
that the Private Exchange Securities shall be subject to such transfer
restrictions. The Indenture or such indenture shall provide that the Exchange
Securities, the Private Exchange Securities and the Securities shall vote and
consent together on all matters as one class and that none of the Exchange
Securities, the Private Exchange Securities or the Securities will have the
right to vote or consent as a separate class on any matter. The Private Exchange
Securities shall be of the same series as the Exchange Securities.

         As soon as practicable after the close of the Exchange Offer and/or the
Private Exchange, as the case may be, the Company shall:

                  (i)      accept for exchange all Registrable Securities duly
         tendered and not validly withdrawn pursuant to the Exchange Offer in
         accordance with the terms of the Exchange Offer Registration Statement
         and the letter of transmittal which shall be an exhibit thereto;

                  (ii)     accept for exchange all Securities properly tendered
         and not validly withdrawn pursuant to the Private Exchange;

                  (iii)    deliver, or cause to be delivered, to the Trustee for
         cancellation all Registrable Securities so accepted for exchange; and

                  (iv)     cause the Trustee promptly to authenticate and
         deliver Exchange Securities or Private Exchange Securities, as the case
         may be, to each Holder of Registrable Securities so accepted for
         exchange in a principal amount equal to the principal amount of the
         Registrable Securities of such Holder so accepted for exchange.

         Interest on each Exchange Security and Private Exchange Security will
accrue from the last date on which interest was paid on the Registrable
Securities surrendered in exchange therefor or, if no interest has been paid on
the Registrable Securities, from the date of original issuance. The Exchange
Offer and the Private Exchange shall not be subject to any conditions, other
than (i) that the Exchange Offer or the Private Exchange, or the making of any
exchange by a Holder, does not violate applicable law or any applicable
interpretation of the staff of the SEC, (ii) the valid tendering of Registrable
Securities in accordance with the Exchange Offer and the Private Exchange, (iii)
that each Holder of Registrable Securities exchanged in the Exchange Offer shall
have represented that all Exchange Securities to be received by it shall be
acquired in the ordinary course of its business and that at the time of the
consummation of the Exchange Offer it shall have no arrangement or understanding
with any person to participate in the distribution (within the meaning of the
1933 Act) of the Exchange Securities and shall have made such other
representations as may be reasonably necessary under applicable SEC rules,
regulations or interpretations to render the use of Form F-4 or other
appropriate form under the 1933 Act available and (iv) that no action or
proceeding shall have been instituted or threatened in any court or by or before
any governmental agency with respect to the Exchange Offer or the Private
Exchange which, in the Company's judgment, would reasonably be expected to
impair the ability of the Company to proceed with the Exchange Offer or the
Private Exchange. The Company shall inform the Initial Purchasers of the names
and addresses of the Holders to whom

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the Exchange Offer is made, and the Initial Purchasers shall have the right,
subject to applicable law, to contact such Holders and otherwise facilitate the
tender of Registrable Securities in the Exchange Offer.

         Upon consummation of the Exchange Offer in accordance with this
Agreement, the Company shall have no further obligation to register the
Registrable Securities pursuant to Section 2.2 of this Agreement.

         2.2 Shelf Registration. (i) If, because of any changes in law, SEC
rules or regulations or applicable interpretations thereof by the staff of the
SEC, the Company determines after consultation with its outside counsel that it
is not permitted to effect the Exchange Offer as contemplated by Section 2.1
hereof, (ii) if for any other reason (A) the Exchange Offer Registration
Statement is not declared effective within 150 days following the original issue
of the Registrable Securities or (B) the Exchange Offer is not consummated
within 180 days after the original issue of the Registrable Securities, (iii)
upon the request of any of the Initial Purchasers holding Private Exchange
Securities with respect to Registrable Securities that are not eligible for
Exchange Securities in the Exchange Offer or if the Initial Purchasers do not
receive freely tradable Exchange Securities in the Exchange Offer or (iv) upon
notice of any Holder (other than an Initial Purchaser) given to the Company in
writing within 30 days after the commencement of the Exchange Offer that (A) due
to a change in law or SEC policy it is not entitled to participate in the
Exchange Offer, (B) due to a change in law or SEC policy it may not resell the
Exchange Securities acquired by it in the Exchange Offer to the public without
delivering a prospectus and the prospectus contained in the Exchange Offer
Registration Statement is not appropriate or available for such resales by such
Holder or (C) it is a broker-dealer and owns Registrable Securities acquired
directly from the Company or an affiliate of the Company, then in case of each
of clauses (i) through (iv) the Company shall, at its cost:

                  (a)      As promptly as practicable, file with the SEC, and
         thereafter shall use its reasonable best efforts to cause to be
         declared effective as promptly as practicable but no later than 180
         days after the original issue of the Registrable Securities, a Shelf
         Registration Statement relating to the offer and sale of the
         Registrable Securities by the Holders from time to time in accordance
         with the methods of distribution elected by the Majority Holders
         participating in the Shelf Registration and set forth in such Shelf
         Registration Statement.

                  (b)      Use its reasonable best efforts to keep the Shelf
         Registration Statement continuously effective in order to permit the
         Prospectus forming part thereof to be usable by Holders for a period of
         two years from the original issue of the Registrable Securities, or for
         such shorter period that will terminate when all Registrable Securities
         covered by the Shelf Registration Statement have been sold pursuant to
         the Shelf Registration Statement or cease to be outstanding or
         otherwise to be Registrable Securities (the "Effectiveness Period");
         provided, however, that the Effectiveness Period in respect of the
         Shelf Registration Statement shall be extended up to a maximum of 90
         days if necessary to permit dealers to comply with the applicable
         prospectus delivery requirements of Rule 174 under the 1933 Act and as
         otherwise provided herein.

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                  (c)      Notwithstanding any other provisions hereof, use its
         reasonable best efforts to ensure that (i) any Shelf Registration
         Statement and any amendment thereto and any Prospectus forming part
         thereof and any supplement thereto complies in all material respects
         with the 1933 Act and the rules and regulations thereunder, (ii) any
         Shelf Registration Statement and any amendment thereto does not, when
         it becomes effective, contain an untrue statement of a material fact or
         omit to state a material fact required to be stated therein or
         necessary to make the statements therein not misleading and (iii) any
         Prospectus forming part of any Shelf Registration Statement, and any
         supplement to such Prospectus (as amended or supplemented from time to
         time), does not include an untrue statement of a material fact or omit
         to state a material fact necessary in order to make the statements, in
         light of the circumstances under which they were made, not misleading.

         The Company shall not permit any securities other than Registrable
Securities to be included in the Shelf Registration Statement. The Company
further agrees, if necessary, to supplement or amend the Shelf Registration
Statement, as required by Section 3(b) below, and to furnish to the Holders of
Registrable Securities copies of any such supplement or amendment promptly as
reasonably practicable after its being used or filed with the SEC.

         2.3 Expenses. The Company shall pay all Registration Expenses in
connection with the registration pursuant to Section 2.1 or 2.2. Each Holder
shall pay all underwriting discounts and commissions and transfer taxes, if any,
relating to the sale or disposition of such Holder's Registrable Securities
pursuant to the Shelf Registration Statement.

         2.4 Effectiveness. (a) The Company will be deemed not to have used its
reasonable best efforts to cause the Exchange Offer Registration Statement or
the Shelf Registration Statement, as the case may be, to become, or to remain,
effective during the requisite period if the Company voluntarily takes any
action that would, or omits to take any action which omission would, result in
any such Registration Statement not being declared effective or in the Holders
of Registrable Securities covered thereby not being able to exchange or offer
and sell such Registrable Securities during that period as and to the extent
contemplated hereby, unless (i) such action is required by applicable law, or
(ii) such action is taken by the Company in good faith and for valid business
reasons (not including avoidance of the Company's obligations hereunder),
including the acquisition or divestiture of assets, so long as the Company
promptly thereafter complies with the requirements of Section 3(k) hereof, if
applicable.

         (b)      An Exchange Offer Registration Statement pursuant to Section
2.1 hereof or a Shelf Registration Statement pursuant to Section 2.2 hereof will
not be deemed to have become effective unless it has been declared effective by
the SEC; provided, however, that if, after it has been declared effective, the
offering of Registrable Securities pursuant to an Exchange Offer Registration
Statement or a Shelf Registration Statement is interfered with by any stop
order, injunction or other order or requirement of the SEC or any other
governmental agency or court, such Registration Statement will be deemed not to
have become effective during the period of such interference, until the offering
of Registrable Securities pursuant to such Registration Statement may legally
resume.

         2.5 Interest. The Indenture executed in connection with the Securities
will provide that in the event that either (a) the Exchange Offer Registration
Statement is not filed with the

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Commission on or prior to the 90th calendar day following the date of original
issue of the Securities, (b) the Exchange Offer Registration Statement has not
been declared effective on or prior to the 150th calendar day following the date
of original issue of the Securities or (c) the Exchange Offer is not consummated
or, if required, a Shelf Registration Statement is not declared effective, in
either case, on or prior to the 180th calendar day following the date of
original issue of the Securities (each such event referred to in clauses (a)
through (c) above, a "Registration Default"), the interest rate borne by the
Securities shall be increased ("Additional Interest") by one-quarter of one
percent (0.25%) per annum upon the occurrence of each Registration Default,
which rate will increase by one quarter of one percent (0.25%) at the beginning
of each 90-day period (or portion thereof) that such Additional Interest
continues to accrue under any such circumstance, provided that the maximum
aggregate increase in the interest rate will in no event exceed one percent (1%)
per annum provided, however, that no Additional Interest shall be payable if the
Exchange Offer Registration Statement is not filed or declared effective or the
Exchange Offer is not consummated on account of the reasons set forth in clause
(i) of the first paragraph of this Section 2.2 (it being understood, however,
that in any such case the Company shall be obligated to file a Shelf
Registration Statement and Additional Interest shall be payable if the Shelf
Registration Statement is not declared effective in accordance with clause (c)),
that no Additional Interest shall be payable if the Shelf Registration Statement
is not declared effective as set forth above because the request under clause
(iii) of Section 2.2 or notice under clause (iv) of such paragraph was not made
on a timely basis; and provided, further, that Additional Interest shall only be
payable in case the Shelf Registration Statement is not declared effective as
aforesaid. Immediately following the cure of a Registration Default, the accrual
of Additional Interest with respect to that particular Registration Default will
cease. Immediately following the cure of all Registration Defaults or the date
on which the Exchange Securities are saleable pursuant to Rule 144(k) under the
1933 Act or any successor provision, the accrual of Additional Interest will
cease and the interest rate will revert to the original rate.

         If the Shelf Registration Statement is declared effective but becomes
unusable by the Holders of Registrable Securities covered by such Shelf
Registration Statement ("Shelf Registrable Securities") for any reason, and the
aggregate number of days in any consecutive twelve-month period for which the
Shelf Registration Statement shall not be usable exceeds 30 days in the
aggregate, then the interest rate borne by the Shelf Registrable Securities will
be increased by 0.25% per annum of the principal amount of the Securities for
the first 90-day period (or portion thereof) beginning on the 31st such day that
such Shelf Registration Statement ceases to be usable, which rate shall be
increased by an additional 0.25% per annum of the principal amount of the
Securities at the beginning of each subsequent 90-day period; provided that the
maximum aggregate increase in the interest rate as a result of a Shelf
Registration Statement being unusable (inclusive of any interest that accrues on
such Shelf Registrable Securities pursuant to the first paragraph of this
Section 2.5) will in no event exceed one percent (1%) per annum. Upon the Shelf
Registration Statement once again becoming usable, the interest rate borne by
the Shelf Registrable Securities will be reduced to the original interest rate.
Additional Interest shall be computed based on the actual number of days elapsed
in each 90-day period in which the Shelf Registration Statement is unusable.

         The Company shall notify the Trustee within five business days after
each and every date on which an event occurs in respect of which Additional
Interest is required to be paid (an

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"Event Date"). Additional Interest shall be paid by depositing with the Trustee,
in trust, for the benefit of the Holders of Registrable Securities entitled to
receive the interest payment , on or before the applicable semiannual interest
payment date, immediately available funds in sums sufficient to pay the
Additional Interest then due. The Additional Interest due shall be payable on
each interest payment date to the record Holder of Securities entitled to
receive the interest payment to be paid on such date as set forth in the
Indenture. Each obligation to pay Additional Interest shall be deemed to accrue
from and including the day following the applicable Event Date.

         2.6 Luxembourg Stock Exchange. The Company shall, for the benefit of
the Holders, use its best efforts to (A) file an application to list the
Exchange Securities and the Shelf Registrable Securities, if any, on the
Luxembourg Stock Exchange; (B) inform the Luxembourg Stock Exchange and cause
notice to be published in a daily newspaper of general circulation in Luxembourg
prior to commencing the Exchange Offer or the Shelf Registration; (C) provide to
the Luxembourg Stock Exchange documents relating to the Exchange Offer or Shelf
Registration and consummate the exchange at the office of Dexia Banque
Internationale a Luxembourg, the paying and transfer agent in Luxembourg, at 69
route d'Esch, L-2953 Luxembourg, and (D) provide the results of the Exchange
Offer or the Shelf Registration, including any increase in the interest rate, to
the Luxembourg Stock Exchange and cause such results to be published in a daily
newspaper of general circulation in Luxembourg.

         3. Registration Procedures.

         In connection with the obligations of the Company with respect to
Registration Statements pursuant to Sections 2.1 and 2.2 hereof, the Company
shall:

                  (a) prepare and file with the SEC a Registration Statement,
within the relevant time period specified in Section 2, on the appropriate form
under the 1933 Act, which form (i) shall be selected by the Company, (ii) shall,
in the case of a Shelf Registration, be available for the sale of the Shelf
Registrable Securities by the selling Holders thereof, and (iii) shall comply as
to form in all material respects with the requirements of the applicable form
and include or incorporate by reference all financial statements required by the
SEC to be filed therewith or incorporated by reference therein;

                  (b) prepare and file with the SEC such amendments and
post-effective amendments to each Registration Statement as may be necessary
under applicable law to keep such Registration Statement effective for the
applicable period; and cause each Prospectus to be supplemented by any required
prospectus supplement, and as so supplemented to be filed pursuant to Rule 424
(or any similar provision then in force) under the 1933 Act and comply with the
provisions of the 1933 Act, the 1934 Act and the rules and regulations
thereunder applicable to them with respect to the disposition of all securities
covered by each Registration Statement during the applicable period in
accordance in the case of a Shelf Registration with the intended method or
methods of distribution by the selling Holders thereof (including sales by any
Participating Broker-Dealer);

                  (c) in the case of a Shelf Registration, (i) notify each
Holder of Registrable Securities, at least five business days prior to filing,
that a Shelf Registration Statement with

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respect to the Registrable Securities is being filed and advising such Holders
that the distribution of Registrable Securities will be made in accordance with
the method selected by the Majority Holders participating in the Shelf
Registration; (ii) furnish to each Holder of Registrable Securities and to each
underwriter of an underwritten offering of Registrable Securities, if any,
without charge, as many copies of each Prospectus, including each preliminary
Prospectus, and any amendment or supplement thereto and such other documents as
such Holder or underwriter may reasonably request, including financial
statements and schedules and, if the Holder so requests, all exhibits in order
to facilitate the public sale or other disposition of the Registrable
Securities; and (iii) hereby consent to the use of the Prospectus or any
amendment or supplement thereto by each of the selling Holders of Registrable
Securities, in accordance with applicable law, in connection with the offering
and sale of the Registrable Securities covered by the Prospectus or any
amendment or supplement thereto;

                  (d) use its best efforts to register or qualify the
Registrable Securities under all applicable state securities or "blue sky" laws
of such jurisdictions as any Holder of Registrable Securities covered by a
Registration Statement and each underwriter of an underwritten offering of
Registrable Securities shall reasonably request by the time the applicable
Registration Statement is declared effective by the SEC, and do any and all
other acts and things which may be reasonably necessary or advisable to enable
each such Holder and underwriter to consummate the disposition in each such
jurisdiction of such Registrable Securities owned by such Holder; provided,
however, that the Company shall not be required to (i) qualify as a foreign
corporation or as a dealer in securities in any jurisdiction where it would not
otherwise be required to qualify but for this Section 3(d), (ii) take any action
which would subject it to general service of process or taxation in any such
jurisdiction where it is not then so subject, or (iii) conform its
capitalization or the composition of its assets at the time to the securities or
blue sky laws of such jurisdiction;

                  (e) notify promptly each Holder of Registrable Securities
under a Shelf Registration or any Participating Broker-Dealer who has notified
the Company that it is utilizing the Exchange Offer Registration Statement as
provided in paragraph (f) below and, if requested by such Holder or
Participating Broker-Dealer, confirm such advice in writing promptly (i) when a
Registration Statement has become effective and when any post-effective
amendments and supplements thereto become effective, (ii) of any request by the
SEC or any state securities authority for post-effective amendments and
supplements to a Registration Statement and Prospectus or for additional
information after the Registration Statement has become effective, (iii) of the
issuance by the SEC or any state securities authority of any stop order
suspending the effectiveness of a Registration Statement or the initiation of
any proceedings for that purpose, (iv) in the case of a Shelf Registration, if,
between the effective date of a Registration Statement and the closing of any
sale of Registrable Securities covered thereby, the representations and
warranties of the Company contained in any underwriting agreement, securities
sales agreement or other similar agreement, if any, relating to the offering
cease to be true and correct in all material respects, (v) of the happening of
any event or the discovery of any facts during the period a Shelf Registration
Statement is effective which makes any statement made in such Registration
Statement or the related Prospectus untrue in any material respect or which
requires the making of any changes in such Registration Statement or Prospectus
in order to make the statements therein not misleading, (vi) of the receipt by
the Company of any notification with respect to the suspension of the
qualification of the Registrable Securities or the Exchange

                                       11

<PAGE>

Securities, as the case may be, for sale in any jurisdiction or the initiation
or threatening of any proceeding for such purpose and (vii) of any determination
by the Company that a post-effective amendment to such Registration Statement
would be appropriate;

                  (f) (A) in the case of the Exchange Offer Registration
Statement (i) include in the Exchange Offer Registration Statement a section
entitled "Plan of Distribution" which section shall be reasonably acceptable to
J.P. Morgan and Citigroup Global Markets on behalf of the Participating
Broker-Dealers, and which shall contain a summary statement of the positions
taken or policies made by the staff of the SEC with respect to the potential
"underwriter" status of any broker-dealer that holds Registrable Securities
acquired for its own account as a result of market-making activities or other
trading activities and that will be the beneficial owner (as defined in Rule
13d-3 under the Exchange Act) of Exchange Securities to be received by such
broker-dealer in the Exchange Offer, whether such positions or policies have
been publicly disseminated by the staff of the SEC or such positions or
policies, in the reasonable judgment of J.P. Morgan and Citigroup Global Markets
on behalf of the Participating Broker-Dealers and its counsel, represent the
prevailing views of the staff of the SEC, including a statement that any such
broker-dealer who receives Exchange Securities for Registrable Securities
pursuant to the Exchange Offer may be deemed a statutory underwriter and must
deliver a prospectus meeting the requirements of the 1933 Act in connection with
any resale of such Exchange Securities, (ii) furnish to each Participating
Broker-Dealer who has delivered to the Company the notice referred to in Section
3(e), without charge, as many copies of each Prospectus included in the Exchange
Offer Registration Statement, including any preliminary prospectus, and any
amendment or supplement thereto, as such Participating Broker-Dealer may
reasonably request, (iii) hereby consent to the use of the Prospectus forming
part of the Exchange Offer Registration Statement or any amendment or supplement
thereto, by any Person subject to the prospectus delivery requirements of the
SEC, including all Participating Broker-Dealers, in connection with the sale or
transfer of the Exchange Securities covered by the Prospectus or any amendment
or supplement thereto, and (iv) include in the transmittal letter or similar
documentation to be executed by an exchange offeree in order to participate in
the Exchange Offer (x) the following provision:

         "If the exchange offeree is a broker-dealer holding Registrable
         Securities acquired for its own account as a result of market-making
         activities or other trading activities, it will deliver a prospectus
         meeting the requirements of the 1933 Act in connection with any resale
         of Exchange Securities received in respect of such Registrable
         Securities pursuant to the Exchange Offer;"

and (y) a statement to the effect that by a broker-dealer making the
acknowledgment described in clause (x) and by delivering a Prospectus in
connection with the exchange of Registrable Securities, the broker-dealer will
not be deemed to admit that it is an underwriter within the meaning of the 1933
Act; and

                      (B)  in the case of any Exchange Offer Registration
Statement, the Company agrees to deliver to J.P. Morgan and Citigroup Global
Markets on behalf of the Participating Broker-Dealers upon the effectiveness of
the Exchange Offer Registration Statement officers' certificates substantially
in the form customarily delivered in a public offering of debt securities and
(iii) a comfort letter or comfort letters in customary form to the

                                       12

<PAGE>

extent permitted by SAS 72 (or if such a comfort letter is not permitted by SAS
72, an agreed upon procedures letter in customary form) from the Company's
independent certified public accountants (and, if necessary, any other
independent certified public accountants of any subsidiary of the Company or of
any business acquired by the Company for which financial statements are, or are
required to be, included in the Registration Statement) at least as broad in
scope and coverage as the comfort letter or comfort letters delivered to the
Initial Purchasers in connection with the initial sale of the Securities to the
Initial Purchasers;

                  (g) (i) in the case of an Exchange Offer, furnish counsel for
the Initial Purchasers and (ii) in the case of a Shelf Registration, furnish
Sidley Austin Brown & Wood LLP, as special counsel for the Holders of Shelf
Registrable Securities (or, if Sidley Austin Brown & Wood LLP is unable or
unwilling to serve, such other special counsel (but not more than one) as may be
selected by the Holders of a majority in principal amount of such Shelf
Registrable Securities ("Special Counsel")), copies of any comment letters
received from the SEC or any other request by the SEC or any state securities
authority for amendments or supplements to a Registration Statement and
Prospectus or for additional information;

                  (h) make every reasonable effort to obtain the withdrawal of
any order suspending the effectiveness of a Registration Statement at the
earliest possible moment;

                  (i) in the case of a Shelf Registration, furnish to each
Holder of Registrable Securities, and each underwriter, if any, without charge,
at least one conformed copy of each Registration Statement and any
post-effective amendment thereto, including financial statements and schedules
(without documents incorporated therein by reference and all exhibits thereto,
unless requested in writing);

                  (j) in the case of a Shelf Registration, cooperate with the
selling Holders of Shelf Registrable Securities to facilitate the timely
preparation and delivery of certificates representing Shelf Registrable
Securities to be sold and not bearing any restrictive legends; and enable such
Shelf Registrable Securities to be in such denominations (consistent with the
provisions of the Indenture) and registered in such names as the selling Holders
or the underwriters, if any, may reasonably request at least three business days
prior to the closing of any sale of Shelf Registrable Shelf Securities;

                  (k) in the case of a Shelf Registration, upon the occurrence
of any event or the discovery of any facts, each as contemplated by Sections
3(e)(v) and 3(e)(vi) hereof, as promptly as practicable after the occurrence of
such an event, use its best efforts to prepare a supplement or post-effective
amendment to the Registration Statement or the related Prospectus or any
document incorporated therein by reference or file any other required document
so that, as thereafter delivered to the purchasers of the Shelf Registrable
Securities or Participating Broker-Dealers, such Prospectus will not contain at
the time of such delivery any untrue statement of a material fact or omit to
state a material fact necessary to make the statements therein, in light of the
circumstances under which they were made, not misleading. At such time as such
public disclosure is otherwise made or the Company determines that such
disclosure is not necessary, in each case to correct any misstatement of a
material fact or to include any omitted material fact, the Company agrees
promptly to notify each Holder of such determination and to furnish each Holder
such number of copies of the Prospectus as amended or supplemented, as such
Holder

                                       13

<PAGE>

may reasonably request and the Initial Purchasers, on their own behalf and on
behalf of subsequent holders, hereby agree to suspend use of the Prospectus
until the Company has amended or supplemented to correct such misstatement or
omission;

                  (l) obtain a CUSIP number for all Exchange Securities, Private
Exchange Securities or Registrable Securities, as the case may be, not later
than the effective date of a Registration Statement, and provide the Trustee
with printed certificates for the Exchange Securities, Private Exchange
Securities or the Registrable Securities, as the case may be, in a form eligible
for deposit with the Depositary;

                  (m) (i) cause the Indenture to be qualified under the TIA in
connection with the registration of the Exchange Securities or Registrable
Securities, as the case may be, (ii) cooperate with the Trustee and the Holders
to effect such changes to the Indenture as may be required for the Indenture to
be so qualified in accordance with the terms of the TIA and (iii) execute, and
use its best efforts to cause the Trustee to execute, all documents as may be
required to effect such changes, and all other forms and documents required to
be filed with the SEC to enable the Indenture to be so qualified in a timely
manner;

                  (n) in the case of a Shelf Registration, enter into customary
agreements (including underwriting agreements) and take all other customary and
appropriate actions in order to expedite or facilitate the disposition of such
Shelf Registrable Securities and in such connection whether or not an
underwriting agreement is entered into and whether or not the registration is an
underwritten registration:

                  (i)      make such representations and warranties to the
         Holders of such Shelf Registrable Securities and the underwriters, if
         any, in form, substance and scope as are customarily made by issuers to
         underwriters in similar underwritten offerings as may be reasonably
         requested by them;

                  (ii)     obtain opinions of United States and Mexican counsel
         to the Company and updates thereof (which counsel and opinions (in
         form, scope and substance) shall be reasonably satisfactory to the
         managing underwriters, if any, and the holders of a majority in
         principal amount of the Shelf Registrable Securities being sold)
         addressed to each selling Holder and the underwriters, if any, covering
         the matters set forth in Exhibit A with such customary exceptions and
         qualifications as contained in the opinions delivered pursuant to the
         Purchase Agreement and such other matters customarily covered in
         opinions requested in sales of securities or underwritten offerings and
         such other matters as may be reasonably requested by such Holders and
         underwriters;

                  (iii)    obtain "cold comfort" letters and updates thereof
         from the Company's independent certified public accountants (and, if
         necessary, any other independent certified public accountants of any
         subsidiary of the Company or of any business acquired by the Company
         for which financial statements are, or are required to be, included in
         the Registration Statement) addressed to the underwriters, if any, and,
         if there are no underwriters, use reasonable efforts to have such
         letter addressed to the selling Holders of Shelf Registrable Securities
         (to the extent consistent with SAS 72), such

                                       14

<PAGE>

         letters to be in customary form and covering matters of the type
         customarily covered in "cold comfort" letters to underwriters in
         connection with similar underwritten offerings;

                  (iv)     if so requested by the Majority Holders, enter into a
         securities sales agreement with the Holders and an agent of the Holders
         providing for, among other things, the appointment of such agent for
         the selling Holders for the purpose of soliciting purchases of Shelf
         Registrable Securities, which agreement shall be in form, substance and
         scope customary for similar offerings;

                  (v)      if an underwriting agreement is entered into, cause
         the same to set forth indemnification provisions and procedures
         substantially equivalent to the indemnification provisions and
         procedures set forth in Section 4 hereof with respect to the
         underwriters and all other parties to be indemnified pursuant to said
         Section or, at the request of any underwriters, in the form customarily
         provided to such underwriters in similar types of transactions;
         provided that such underwriting agreement shall contain customary
         provisions regarding indemnification of the Company with respect to
         information provided by the underwriter; and

                  (vi)     deliver such documents and certificates as may be
         reasonably requested and as are customarily delivered in similar
         offerings to the Holders of a majority in principal amount of the Shelf
         Registrable Securities being sold and the managing underwriters, if
         any.

The above shall be done at (i) the effectiveness of such Registration Statement
(and each post-effective amendment thereto) and (ii) each closing under any
underwriting or similar agreement as and to the extent required thereunder;

                  (o) in the case of a Shelf Registration or if a Prospectus is
required to be delivered by any Participating Broker-Dealer in the case of an
Exchange Offer, make available for inspection by representatives of the Holders
of the Registrable Securities, any underwriters participating in any disposition
pursuant to a Shelf Registration Statement, any Participating Broker-Dealer, any
Special Counsel or any accountant retained by any of the foregoing, all
financial and other records, pertinent corporate documents and properties of the
Company reasonably requested by any such persons, and cause the respective
officers, directors, employees, and any other agents of the Company to supply
all information reasonably requested by any such representative, underwriter,
Special Counsel or accountant in connection with a Registration Statement, and
make such representatives of the Company available for discussion of such
documents as shall be reasonably requested by the Initial Purchasers, provided,
however that such records, documents or information which the Company identifies
as being confidential shall not be disclosed by the representative, Holder,
attorney or accountant unless (i) the disclosure of such records, documents or
information is necessary to avoid or correct a misstatement or omission in a
Registration Statement, (ii) the release of such records, documents or
information is ordered pursuant to a subpoena or other order from a court of
competent jurisdiction or as part of the evidentiary procedures of a court of
competent jurisdiction; or (iii) such records, documents or information have
previously been generally made available to the public.

                                       15

<PAGE>

                  (p) (i) in the case of an Exchange Offer Registration
Statement, a reasonable time prior to the filing of any Exchange Offer
Registration Statement, any Prospectus forming a part thereof, any amendment to
an Exchange Offer Registration Statement or amendment or supplement to such
Prospectus, provide copies of such document to the Initial Purchasers and to
Sidley Austin Brown & Wood LLP, as counsel to the Holders of Registrable
Securities, and make such changes in any such document prior to the filing
thereof as the Initial Purchasers or such counsel to the Holders of Registrable
Securities may reasonably request and, except as otherwise required by
applicable law, not file any such document in a form to which the Initial
Purchasers on behalf of the Holders of Registrable Securities and such counsel
to the Holders of Registrable Securities shall not have previously been advised
and furnished a copy of or to which the Initial Purchasers on behalf of the
Holders of Registrable Securities or such counsel to the Holders of Registrable
Securities shall reasonably object, and make the representatives of the Company
available for discussion of such documents as shall be reasonably requested by
the Initial Purchasers; and

                          (ii) in the case of a Shelf Registration, a reasonable
time prior to filing any Shelf Registration Statement, any Prospectus forming a
part thereof, any amendment to such Shelf Registration Statement or amendment or
supplement to such Prospectus, provide copies of such document to the Holders of
Shelf Registrable Securities, to the Initial Purchasers, to Special Counsel and
to the underwriter or underwriters of an underwritten offering of Shelf
Registrable Securities, if any, make such changes in any such document prior to
the filing thereof as the Initial Purchasers, Special Counsel or the underwriter
or underwriters reasonably request and not file any such document in a form to
which the Majority Holders of Shelf Registrable Securities, the Initial
Purchasers on behalf of the Holders of Registrable Securities, Special Counsel
or any underwriter shall not have previously been advised and furnished a copy
of or to which such Majority Holders, the Initial Purchasers of behalf of the
Holders of Registrable Securities, Special Counsel or any underwriter shall
reasonably object, and make the representatives of the Company available for
discussion of such document as shall be reasonably requested by the Holders of
Registrable Securities, the Initial Purchasers on behalf of such Holders,
Special Counsel or any underwriter.

                  (q) in the case of a Shelf Registration, use its best efforts
to cause all Exchange Securities and Shelf Registrable Securities to be listed
on any securities exchange on which similar debt securities issued by the
Company are then listed if requested by the Majority Holders or if requested by
the underwriter or underwriters of an underwritten offering of Registrable
Securities, if any;

                  (r) in the case of a Shelf Registration, use its reasonable
best efforts to cause the Shelf Registrable Securities to be rated by two
nationally recognized statistical rating agencies, if so requested by the
Majority Holders, or if requested by the underwriter or underwriters of an
underwritten offering of Registrable Securities, if any;

                  (s) otherwise comply with all applicable rules and regulations
of the SEC and make available to its security holders, as soon as reasonably
practicable, an earnings statement covering at least 12 months which shall
satisfy the provisions of Section 11(a) of the 1933 Act and Rule 158 thereunder;

                                       16

<PAGE>

                  (t) cooperate and assist in any filings required to be made
with the NASD and, in the case of a Shelf Registration, in the performance of
any due diligence investigation by any underwriter and its counsel (including
any "qualified independent underwriter" that is required to be retained in
accordance with the rules and regulations of the NASD); and

                  (u) upon consummation of an Exchange Offer or a Private
Exchange, obtain a customary opinion of counsel to the Company addressed to the
Trustee for the benefit of all Holders of Registrable Securities participating
in the Exchange Offer or Private Exchange, and which includes an opinion that
(i) the Company has duly authorized, executed and delivered the Exchange
Securities and/or Private Exchange Securities, as applicable, and the related
indenture, and (ii) each of the Exchange Securities and related indenture
constitute a legal, valid and binding obligation of the Company, enforceable
against the Company in accordance with its respective terms (with customary
exceptions).

         In the case of a Shelf Registration Statement, the Company may (as a
condition to such Holder's participation in the Shelf Registration) require each
Holder of Shelf Registrable Securities to furnish to the Company such
information regarding the Holder and the proposed distribution by such Holder of
such Shelf Registrable Securities as the Company may from time to time
reasonably request in writing for use in connection with any Shelf Registration
Statement or Prospectus included therein, including without limitation,
information specified in Item 507 of Regulation S-K under the 1933 Act.

         In the case of a Shelf Registration Statement, each Holder agrees that,
upon receipt of any notice from the Company of the happening of any event or the
discovery of any facts, each of the kind described in Section 3(e)(v) hereof,
such Holder will forthwith discontinue disposition of Registrable Securities
pursuant to a Registration Statement until such Holder's receipt of the copies
of the supplemented or amended Prospectus contemplated by Section 3(k) hereof,
and, if so directed by the Company, such Holder will deliver to the Company (at
its expense) all copies in such Holder's possession, other than permanent file
copies then in such Holder's possession, of the Prospectus covering such Shelf
Registrable Securities current at the time of receipt of such notice.

         During any 365-day period, the Company, upon notice to the Holders, may
suspend the availability of such Registration Statement for up to two periods of
up to 45 consecutive days (except for the consecutive 45-day period immediately
prior to the maturity of the Securities), but not more than an aggregate of 60
days during any 365-day period, if the Company's Board of Directors determines
in good faith that there is a valid purpose for the suspension.

         If any of the Registrable Securities covered by any Shelf Registration
Statement are to be sold in an underwritten offering, the underwriter or
underwriters and manager or managers that will manage such offering will be
selected by the Majority Holders of such Registrable Securities included in such
offering, provided such selection is acceptable to the Company. No Holder of
Registrable Securities may participate in any underwritten registration
hereunder unless such Holder (a) agrees to sell such Holder's Registrable
Securities on the basis provided in any underwriting arrangements approved by
the persons entitled hereunder to approve such arrangements and (b) completes
and executes all questionnaires, powers of attorney, indemnities,

                                       17

<PAGE>

underwriting agreements and other documents required under the terms of such
underwriting arrangements.

         4. Indemnification; Contribution.

                  (a) The Company agrees to indemnify and hold harmless the
Initial Purchasers, each Holder, each Participating Broker-Dealer, each Person
who participates as an underwriter (any such Person being an "Underwriter") and
each Person, if any, who controls any Holder or Underwriter within the meaning
of Section 15 of the 1933 Act or Section 20 of the 1934 Act as follows:

                  (i)      against any and all loss, liability, claim, damage
         and expense, as incurred, arising out of any untrue statement or
         alleged untrue statement of a material fact contained in any
         Registration Statement (or any amendment or supplement thereto)
         pursuant to which Exchange Securities or Registrable Securities were
         registered under the 1933 Act, including all documents incorporated
         therein by reference, or the omission or alleged omission therefrom of
         a material fact required to be stated therein or necessary to make the
         statements therein not misleading, or arising out of any untrue
         statement or alleged untrue statement of a material fact contained in
         any Prospectus (or any amendment or supplement thereto) or the omission
         or alleged omission therefrom of a material fact necessary in order to
         make the statements therein, in the light of the circumstances under
         which they were made, not misleading;

                  (ii)     against any and all loss, liability, claim, damage
         and expense, as incurred, to the extent of the aggregate amount paid in
         settlement of any litigation, or any investigation or proceeding by any
         governmental agency or body, commenced or threatened, or of any claim
         based upon any such untrue statement or omission, or any such alleged
         untrue statement or omission; provided that (subject to Section 4(d)
         below) any such settlement is effected with the written consent of the
         Company; and

                  (iii)    against any and all expense, as incurred (including
         the fees and disbursements of counsel chosen by any indemnified party
         as provided therein), reasonably incurred in investigating or defending
         against any litigation, or any investigation or proceeding by any
         governmental agency or body, commenced or threatened, or any claim
         based upon any such untrue statement or omission, or any such alleged
         untrue statement or omission, to the extent that any such expense is
         not paid under subparagraph (i) or (ii) above;

provided, however, that this indemnity agreement shall not apply to any loss,
liability, claim, damage or expense to the extent arising out of any untrue
statement or omission or alleged untrue statement or omission made in reliance
upon and in conformity with written information furnished to the Company by the
Holder or Underwriter expressly for use in a Registration Statement (or any
amendment thereto) or any Prospectus (or any amendment or supplement thereto),
and provided further, that the Company shall not indemnify any Underwriter or
any person who controls such Underwriter from any loss, liability, claim or
damage (or expense incurred in connection therewith) alleged by any person who
purchased Exchange Securities or Registrable Securities from such Underwriter if
the untrue statement, omission or allegation

                                       18

<PAGE>

thereof upon which such loss, liability, claim or damage is based was made in
(i) any preliminary prospectus, if a copy of the Prospectus (as then amended or
supplemented if the Company shall have furnished any amendments or supplements
thereto) was not sent or given by or on behalf of such Underwriter to such
person at or prior to the written confirmation of the sale of Exchange
Securities or Registrable Securities to such person, and if the Prospectus (as
so amended or supplemented) corrected the untrue statement or omission giving
rise to such loss, claim, damage or liability; (ii) any Prospectus used by such
Underwriter or any person who controls such Underwriter, after such time as the
Company advised the Underwriters that the filing of a post-effective amendment
or supplement thereto was required, except the Prospectus as so amended or
supplemented, if the Prospectus as amended or supplemented by such
post-effective amendment or supplement would not have given rise to such loss,
liability, claim or damage; or (iii) any Prospectus used after such time as the
obligation of the Company to keep the same current and effective has expired.

                  (b) Each Holder severally, but not jointly, agrees to
indemnify and hold harmless the Company, the Initial Purchasers, each
Underwriter and the other selling Holders, and each of their respective
directors and officers, and each Person, if any, who controls the Company, the
Initial Purchasers, any Underwriter or any other selling Holder within the
meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act, against any
and all loss, liability, claim, damage and expense described in the indemnity
contained in Section 4(a) hereof, as incurred, but only with respect to untrue
statements or omissions, or alleged untrue statements or omissions, made in the
Shelf Registration Statement (or any amendment thereto) or any Prospectus
included therein (or any amendment or supplement thereto) in reliance upon and
in conformity with written information with respect to such Holder furnished to
the Company by such Holder expressly for use in the Shelf Registration Statement
(or any amendment thereto) or such Prospectus (or any amendment or supplement
thereto); provided, however, that no such Holder shall be liable for any claims
hereunder in excess of the amount of net proceeds received by such Holder from
the sale of Registrable Securities pursuant to such Shelf Registration
Statement.

                  (c) Each indemnified party shall give written notice as
promptly as reasonably practicable to each indemnifying party of any action or
proceeding commenced against it in respect of which indemnity may be sought
hereunder, and the indemnifying party shall assume the defense thereof,
including the employment of counsel satisfactory to the indemnified party, and
the payment of all expenses. Any omission to so notify an indemnifying party
shall not relieve such indemnifying party from any liability hereunder to the
extent it is not materially prejudiced as a result thereof and in any event
shall not relieve it from any liability which it may have otherwise than on
account of this indemnity agreement. Any such indemnified party shall have the
right to employ separate counsel in any such action or proceeding and to
participate in the defense thereof, but the fees and expenses of such separate
counsel shall be paid by such indemnified party unless (a) the indemnifying
party has agreed to pay such fees and expenses or (b) the indemnifying party
shall have failed to assume the defense of such action or proceeding and employ
counsel reasonably satisfactory to the indemnified party in any such action or
proceeding within a reasonable time or (c) the named parties to any such action
or proceeding (including any impleaded parties) include both such indemnified
party and indemnifying party, and the indemnified party shall have been advised
by its counsel that there may be a conflict of interest between such indemnified
party and indemnifying party in the conduct of the defense of such action (in
which case, if such indemnified party notifies the indemnifying party in writing

                                       19

<PAGE>

that it elects to employ separate counsel at the expense of the indemnifying
party, the indemnifying party shall not have the right to assume the defense of
such action or proceeding on behalf of such indemnified party), it being
understood, however, that the indemnifying party shall not, in connection with
any one such action or proceeding or separate but substantially similar or
related actions or proceedings arising out of the same general allegations or
circumstances, be liable for the reasonable fees and expenses of more than one
separate firm of attorneys (unless the members of such firm are not admitted to
practice in a jurisdiction where an action is pending, in which case the
indemnifying party shall pay the reasonable fees and expenses of one additional
firm of attorneys to act as local counsel in such jurisdiction, provided the
services of such counsel are substantially limited to that of appearing as
attorneys of record) at any time for all indemnified parties, which firm shall
be designated in writing by the indemnified party. No indemnifying party shall,
without the prior written consent of the indemnified parties, settle or
compromise or consent to the entry of any judgment with respect to any
litigation, or any investigation or proceeding by any governmental agency or
body, commenced or threatened, or any claim whatsoever in respect of which
indemnification or contribution could be sought under this Section 4 (whether or
not the indemnified parties are actual or potential parties thereto), unless
such settlement, compromise or consent (i) includes an unconditional release of
each indemnified party from all liability arising out of such litigation,
investigation, proceeding or claim and (ii) does not include a statement as to
or an admission of fault, culpability or a failure to act by or on behalf of any
indemnified party.

                  (d) If at any time an indemnified party shall have requested
an indemnifying party to reimburse the indemnified party for fees and expenses
of counsel, such indemnifying party agrees that it shall be liable for any
settlement of the nature contemplated by Section 4(a)(ii) effected without its
written consent if (i) such settlement is entered into more than 45 days after
receipt by such indemnifying party of the aforesaid request, (ii) such
indemnifying party shall have received notice of the terms of such settlement at
least 30 days prior to such settlement being entered into and (iii) such
indemnifying party shall not have reimbursed such indemnified party in
accordance with such request prior to the date of such settlement unless the
indemnifying party in good faith shall be contesting the reasonableness of such
fees and expenses (but only to the extent so contested) or the entitlement of
the indemnified party to indemnification under the terms of this Section 4.

                  (e) If the indemnification provided for in this Section 4 is
for any reason unavailable to hold harmless an indemnified party (other than by
reason of the first sentence of Section 4(c)) in respect of any losses,
liabilities, claims, damages or expenses referred to therein, then each
indemnifying party shall contribute to the aggregate amount of such losses,
liabilities, claims, damages and expenses incurred by such indemnified party, as
incurred, in such proportion as is appropriate to reflect the relative fault of
the Company on the one hand and the Holders and the Initial Purchasers on the
other hand in connection with the statements or omissions which resulted in such
losses, liabilities, claims, damages or expenses, as well as any other relevant
equitable considerations.

         The relative fault of the Company on the one hand and the Holders and
the Initial Purchasers on the other hand shall be determined by reference to,
among other things, whether any such untrue or alleged untrue statement of a
material fact or omission or alleged omission to state a material fact relates
to information supplied by the Company, the Holders or the Initial

                                       20

<PAGE>

Purchasers and the parties' relative intent, knowledge, access to information
and opportunity to correct or prevent such statement or omission.

         The Company, the Holders and the Initial Purchasers agree that it would
not be just and equitable if contribution pursuant to this Section 4 were
determined by pro rata allocation (even if the Initial Purchasers were treated
as one entity for such purpose) or by any other method of allocation which does
not take account of the equitable considerations referred to above in this
Section 4. The aggregate amount of losses, liabilities, claims, damages and
expenses incurred by an indemnified party and referred to above in this Section
4 shall be deemed to include any legal or other expenses reasonably incurred by
such indemnified party in investigating, preparing or defending against any
litigation, or any investigation or proceeding by any governmental agency or
body, commenced or threatened, or any claim whatsoever based upon any such
untrue or alleged untrue statement or omission or alleged omission.

         Notwithstanding the provisions of this Section 4, no Initial Purchaser
shall be required to contribute any amount in excess of the amount by which the
total price at which the Securities purchased and sold by it were offered
exceeds the amount of any damages which such Initial Purchaser has otherwise
been required to pay by reason of such untrue or alleged untrue statement or
omission or alleged omission.

         No Person guilty of fraudulent misrepresentation (within the meaning of
Section 11(f) of the 1933 Act) shall be entitled to contribution from any Person
who was not guilty of such fraudulent misrepresentation.

         For purposes of this Section 4, each Person, if any, who controls an
Initial Purchaser or Holder within the meaning of Section 15 of the 1933 Act or
Section 20 of the 1934 Act shall have the same rights to contribution as such
Initial Purchaser or Holder, and each Person, if any, who controls the Company
within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act
shall have the same rights to contribution as the Company. The Initial
Purchasers' respective obligations to contribute pursuant to this Section 4 are
several in proportion to the principal amount of Securities set forth opposite
their respective names in Schedule A to the Purchase Agreement and not joint.

         5. Miscellaneous.

         5.1 Rule 144 and Rule 144A. For so long as the Company is subject to
the reporting requirements of Section 13 or 15 of the 1934 Act, the Company
covenants that it will file the reports required to be filed by it under the
1933 Act and Section 13(a) or 15(d) of the 1934 Act and the rules and
regulations adopted by the SEC thereunder. If the Company ceases to be so
required to file such reports, the Company covenants that it will upon the
request of any Holder of Registrable Securities as soon as commercially
practicable (a) make publicly available such information as is necessary to
permit sales pursuant to Rule 144 under the 1933 Act, (b) deliver such
information to a prospective purchaser as is necessary under applicable rules
and regulations to permit sales pursuant to Rule 144A under the 1933 Act and it
will take such further action as any Holder of Registrable Securities may
reasonably request, and (c) take such further action that is reasonable in the
circumstances, in each case, to the extent required from time to time to enable
such Holder to sell its Registrable Securities without registration under the

                                       21

<PAGE>

1933 Act within the limitation of the exemptions provided by (i) Rule 144 under
the 1933 Act, as such Rule may be amended from time to time, (ii) Rule 144A
under the 1933 Act, as such Rule may be amended from time to time, or (iii) any
similar rules or regulations hereafter adopted by the SEC. Upon the request of
any Holder of Registrable Securities, the Company will deliver to such Holder a
written statement as to whether it has complied with such requirements. The
Company's obligations under this Section 5.1 shall terminate upon the later of
the consummation of the Exchange Offer and the Effectiveness Period.

         5.2 No Inconsistent Agreements. The Company has not entered into and
the Company will not after the date of this Agreement enter into any agreement
which is inconsistent with the rights granted to the Holders of Registrable
Securities in this Agreement or otherwise conflicts with the provisions hereof.
The rights granted to the Holders hereunder do not and will not for the term of
this Agreement in any way conflict with the rights granted to the holders of the
Company's other issued and outstanding securities under any such agreements.

         5.3 Amendments and Waivers. The provisions of this Agreement, including
the provisions of this sentence, may not be amended, modified or supplemented,
and waivers or consents to departures from the provisions hereof may not be
given unless the Company has obtained the written consent of Holders of at least
a majority in aggregate principal amount of the outstanding Registrable
Securities affected by such amendment, modification, supplement, waiver or
departure.

         5.4 Notices. All notices and other communications provided for or
permitted hereunder shall be made in writing by hand delivery, registered
first-class mail, telecopier, or any courier guaranteeing overnight delivery (a)
if to a Holder, at the most current address given by such Holder to the Company
by means of a notice given in accordance with the provisions of this Section
5.4, which address initially is the address set forth in the Purchase Agreement
with respect to the Initial Purchasers; and (b) if to the Company, initially at
the Company's address set forth in the Purchase Agreement, and thereafter at
such other address of which notice is given in accordance with the provisions of
this Section 5.4.

         All such notices and communications shall be deemed to have been duly
given: at the time delivered by hand, if personally delivered; two business days
after being deposited in the mail, postage prepaid, if mailed; when receipt is
acknowledged, if telecopied; and on the next business day if timely delivered to
an air courier guaranteeing overnight delivery.

         Copies of all such notices, demands, or other communications shall be
concurrently delivered by the person giving the same to the Trustee under the
Indenture, at the address specified in such Indenture.

         5.5 Successor and Assigns. This Agreement shall inure to the benefit of
and be binding upon the successors, assigns and transferees of each of the
parties, including, without limitation and without the need for an express
assignment, subsequent Holders; provided that nothing herein shall be deemed to
permit any assignment, transfer or other disposition of Registrable Securities
in violation of the terms of the Purchase Agreement or the Indenture. If any
transferee of any Holder shall acquire Registrable Securities, in any manner,
whether by operation of law or otherwise, such Registrable Securities shall be
held subject to all of the terms of this Agreement,

                                       22

<PAGE>

and by taking and holding such Registrable Securities such person shall be
conclusively deemed to have agreed to be bound by and to perform all of the
terms and provisions of this Agreement, including the restrictions on resale set
forth in this Agreement and, if applicable, the Purchase Agreement, and such
person shall be entitled to receive the benefits hereof.

         5.6 Third Party Beneficiaries. The Initial Purchasers (even if the
Initial Purchasers are not Holders of Registrable Securities) shall be third
party beneficiaries to the agreements made hereunder between the Company, on the
one hand, and the Holders, on the other hand, and shall have the right to
enforce such agreements directly to the extent they deem such enforcement
necessary or advisable to protect their rights or the rights of Holders
hereunder. Each Holder of Registrable Securities shall be a third party
beneficiary to the agreements made hereunder between the Company, on the one
hand, and the Initial Purchasers, on the other hand, and shall have the right to
enforce such agreements directly to the extent it deems such enforcement
necessary or advisable to protect its rights hereunder.

         5.7 Specific Enforcement. Without limiting the remedies available to
the Initial Purchasers and the Holders, the Company acknowledges that any
failure by the Company to comply with its obligations under Sections 2.1 through
2.4 hereof may result in material irreparable injury to the Initial Purchasers
or the Holders for which there is no adequate remedy at law, that it would not
be possible to measure damages for such injuries precisely and that, in the
event of any such failure, the Initial Purchasers or any Holder may obtain such
relief as may be required to specifically enforce the Company's obligations
under Sections 2.1 through 2.4 hereof.

         5.8 Counterparts. This Agreement may be executed in any number of
counterparts and by the parties hereto in separate counterparts, each of which
when so executed shall be deemed to be an original and all of which taken
together shall constitute one and the same agreement.

         5.9 Headings. The headings in this Agreement are for convenience of
reference only and shall not limit or otherwise affect the meaning hereof.

         5.10 GOVERNING LAW; CONSENT TO JURISDICTION; APPOINTMENT OF AGENT FOR
SERVICE OF PROCESS.

              (a) THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAW OF THE STATE OF NEW YORK WITHOUT REGARD TO THE
PRINCIPLES OF CONFLICT OF LAWS THEREOF.

              (b) Each of the Initial Purchasers and the Company irrevocably
consents and agrees that any legal action, suit or proceeding against it with
respect to its obligations, liabilities or any other matter arising out of or
based on this Agreement may be brought in any United States federal or state
court in the State of New York, County of New York.

              (c) The Company designates, appoints, and empowers CT Corporation
System with offices currently at 111 Eighth Avenue, New York, New York 10011, as
its designee, appointee and agent to receive and accept for and on its behalf,
and its properties, assets and revenues, service of any and all legal process,
summons, notices and documents that may be served in any action, suit or
proceeding brought against the Company in any such United States

                                       23

<PAGE>

federal or state court with respect to its obligations, liabilities or any other
matter arising out of or in connection with this Agreement, the Purchase
Agreement and the Indenture and that may be made on such designee, appointee and
agent in accordance with legal procedures prescribed for such courts. If for any
reason such designee, appointee and agent hereunder shall cease to be available
to act as such, the Company agrees to designate a new designee, appointee and
agent in The City of New York on the terms and for the purposes of this Section
5 reasonably satisfactory to the Majority Holders. The Company further hereby
irrevocably consents and agrees to the service of any and all legal process,
summons, notices and documents in any such action, suit or proceeding against
the Company by serving a copy thereof upon the relevant agent for service of
process referred to in this Section 5.10 (whether or not the appointment of such
agent shall for any reason prove to be ineffective or such agent shall accept or
acknowledge such service). The Company agrees that the failure of any such
designee, appointee and agent to give any notice of such service to them shall
not impair or affect in any way the validity of such service or any judgment
rendered in any action or proceeding based thereon. Each of the parties
irrevocably and unconditionally waives, to the fullest extent permitted by law,
any objection that they may now or hereafter have to the laying of venue of any
of the aforesaid actions, suits or proceedings arising out of or in connection
with this Agreement, the Purchase Agreement and the Indenture brought in the
federal courts located in The City of New York or the courts of the State of New
York located in The County of New York and hereby further irrevocably and
unconditionally waives and agrees, to the fullest extent permitted by law, not
to plead or claim in any such court that any such action, suit or proceeding
brought in any such court has been brought in an inconvenient forum.

         5.11 Severability. In the event that any one or more of the provisions
contained herein, or the application thereof in any circumstance, is held
invalid, illegal or unenforceable, the validity, legality and enforceability of
any such provision in every other respect and of the remaining provisions
contained herein shall not be affected or impaired thereby.

                                       24
<PAGE>

         IN WITNESS WHEREOF, the parties have executed this Agreement as of the
date first written above.

                                      INNOVA S. DE R.L. DE C.V.

                                      By: /s/ Pablo Abel Vazquez Oria
                                          --------------------------------------
                                          Name:  Pablo Abel Vazquez Oria
                                          Title: Chief Executive Officer

                                      By: /s/ Carlos Ferreiro Rivas
                                          --------------------------------------
                                          Name:  Carlos Ferreiro Rivas
                                          Title: Chief Financial Officer

<PAGE>

CONFIRMED AND ACCEPTED
         as of the date first above written:

J.P. MORGAN SECURITIES INC.

By:    /s/ Gabriel Bochi
    -----------------------------------
         Authorized Signatory

CITIGROUP GLOBAL MARKETS, INC.

By:    /s/ John Boord
    -----------------------------------
         Authorized Signatory

For itself and the other Initial Purchasers set forth above.

<PAGE>

                                                                       Exhibit A

         At the time the Exchange Offer Registration Statement was declared
effective by the Commission, the Exchange Offer Registration Statement and the
Prospectus, as of the date hereof (except as to (x) the financial statements,
notes and schedules thereto and other financial and statistical data contained
in, omitted from or incorporated by reference therein, and (y) the Form T-1, as
to which such counsel need express no opinion), appeared on their face to be
responsive as to form in all material respects to the requirements of the 1933
Act and the applicable rules and regulations promulgated under the 1933 Act*. In
passing upon the form of such documents, we have necessarily assumed the
correctness and completeness of the statements made or included therein by the
Company and take no responsibility for the accuracy, completeness or fairness of
the statements contained therein except insofar as such statements related to
the description of the Exchange Securities and the Indenture or relate to us.
However, in connection with our examination of the Registration Statement and
the Prospectus, we have had conferences with certain officers and other
representatives of the Company, and our examination of the Registration
Statement and the Prospectus and our discussions in such conferences did not
disclose to us any information which gave us reason to believe that either the
Registration Statement, as of its effective date, or the Prospectus, as of the
date hereof (except as to (x) the financial statements, notes and schedules
thereto and other financial data contained or incorporated by reference therein,
as to which such counsel need express no opinion), contains any untrue statement
of a material fact or omits any material fact required to be stated therein or
necessary to make the statements therein (in the case of the Prospectus, in
light of the circumstances under which they were made) not misleading.

---------------------------
*        To be provided only by United States counsel.

                                       A-1