Document:

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                                                                     Exhibit 4.2

                INDENTURE SUPPLEMENT TO ADD SECURITIES GUARANTORS

            This Supplemental Indenture, dated as of March 17, 2005 (this
"Supplemental Indenture" or "Guarantee"), among UGS Israeli Holdings, Inc. (the
"Guarantor"), UGS Corp. (together with its successors and assigns, the
"Company"), each other then existing Guarantor under the Indenture referred to
below (the "Securities Guarantors"), and U.S. Bank National Association, as
trustee (the "Trustee") under the Indenture referred to below.

                              W I T N E S S E T H:

            WHEREAS, the Company, the Securities Guarantors and the Trustee have
heretofore executed and delivered an Indenture, dated as of May 27, 2004 (as
amended, supplemented, waived or otherwise modified, the "Indenture"), providing
for the issuance of 10% Senior Subordinated Notes due 2012 of the Company (the
"Securities");

            WHEREAS, Section 4.16 of the Indenture provides that the Company is
required to cause each Restricted Subsidiary that Guarantees any Indebtedness of
the Company or any of its Guarantors to execute and deliver to the Trustee a
supplemental indenture pursuant to which such Restricted Subsidiary will
unconditionally Guarantee, on a joint and several basis with the other
Securities Guarantors, the full and prompt payment of the principal of, premium,
if any, and interest on the Securities on a senior subordinated basis; and

            WHEREAS, pursuant to Section 9.01 of the Indenture, the Trustee and
the Company are authorized to execute and deliver this Supplemental Indenture to
amend or supplement the Indenture, without the consent of any Holder.

            NOW, THEREFORE, in consideration of the foregoing and for other good
and valuable consideration, the receipt of which is hereby acknowledged, the
Guarantor, the Company, the other Securities Guarantors and the Trustee mutually
covenant and agree for the equal and ratable benefit of the Holders of the
Securities as follows:

                                    ARTICLE I

                                   Definitions

            SECTION 1.1 Defined Terms. As used in this Supplemental Indenture,
terms defined in the Indenture or in the preamble or recital hereto are used
herein as therein defined, except that the term "Holders" in this Guarantee
shall refer to the term "Holders" as defined in the Indenture and the Trustee
acting on behalf or for the benefit of such Holders. The words "herein,"
"hereof" and "hereby" and other words of similar import used in this
Supplemental Indenture refer to this Supplemental Indenture as a whole and not
to any particular section hereof.

                                       1
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                                   ARTICLE II

                        Agreement to be Bound; Guarantee

            SECTION 2.1 Agreement to be Bound. The Guarantor hereby becomes a
party to the Indenture as a Securities Guarantor and as such will have all of
the rights and be subject to all of the obligations and agreements of a
Securities Guarantor under the Indenture. The Guarantor agrees to be bound by
all of the provisions of the Indenture applicable to a Securities Guarantor and
to perform all of the obligations and agreements of a Securities Guarantor under
the Indenture.

            SECTION 2.2 Guarantee. The Guarantor agrees, on a joint and several
basis with all the existing Securities Guarantors, to fully, unconditionally and
irrevocably Guarantee to each Holder of the Securities and the Trustee the
Obligations on a senior subordinated basis as provided in Articles Ten and
Eleven of the Indenture.

                                   ARTICLE III

                                  Miscellaneous

            SECTION 3.1 Notices. All notices and other communications to the
Guarantor shall be given as provided in the Indenture to the Guarantor, at its
address set forth below, with a copy to the Company as provided in the Indenture
for notices to the Company.

            SECTION 3.2 Parties. Nothing expressed or mentioned herein is
intended or shall be construed to give any Person, firm or corporation, other
than the Holders and the Trustee, any legal or equitable right, remedy or claim
under or in respect of this Supplemental Indenture or the Indenture or any
provision herein or therein contained.

            SECTION 3.3 Governing Law. This Supplemental Indenture shall be
governed by, and construed in accordance with, the laws of the State of New
York.

            SECTION 3.4 Severability Clause. In case any provision in this
Supplemental Indenture shall be invalid, illegal or unenforceable, the validity,
legality and enforceability of the remaining provisions shall not in any way be
affected or impaired thereby and such provision shall be ineffective only to the
extent of such invalidity, illegality or unenforceability.

            SECTION 3.5 Ratification of Indenture; Supplemental Indentures Part
of Indenture. Except as expressly amended hereby, the Indenture is in all
respects ratified and confirmed and all the terms, conditions and provisions
thereof shall remain in full force and effect. This Supplemental Indenture shall
form a part of the Indenture for all purposes, and every Holder of Securities
heretofore or hereafter authenticated and delivered shall be bound hereby. The
Trustee makes no representation or warranty as to the validity or sufficiency of
this Supplemental Indenture.

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            SECTION 3.6 Counterparts. The parties hereto may sign one or more
copies of this Supplemental Indenture in counterparts, all of which together
shall constitute one and the same agreement.

            SECTION 3.7 Headings. The headings of the Articles and the sections
in this Guarantee are for convenience of reference only and shall not be deemed
to alter or affect the meaning or interpretation of any provisions hereof.

                           [Signature Pages to Follow]

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            IN WITNESS WHEREOF, the parties hereto have caused this Indenture to
be duly executed as of the date first above written.

                                  UGS ISRAELI HOLDINGS, INC.,
                                  as a Guarantor

                                  By: /s/ Douglas E. Barnett
                                      ----------------------------------------
                                      Name: Douglas E. Barnett
                                      Title: Senior Vice President,
                                             Chief Financial Officer,
                                             Treasurer and Assistant Secretary

                                  Address for notice:
                                  5800 Granite Parkway, Suite 600
                                  Plano, TX  75024

                                  U.S. BANK NATIONAL ASSOCIATION,
                                  as Trustee

                                  By: /s/ Richard Prokosch
                                      ----------------------------------------
                                      Name: Richard Prokosch
                                      Title: Vice President

                                  UGS CORP.

                                  By: /s/ Douglas E. Barnett
                                      ----------------------------------------
                                      Name: Douglas E. Barnett
                                      Title: Senior Vice President,
                                             Chief Financial Officer and
                                             Assistant Secretary

                                  UGS PLM SOLUTIONS ASIA/PACIFIC
                                  INCORPORATED

                                  By: /s/ Douglas E. Barnett
                                      ----------------------------------------
                                      Name: Douglas E. Barnett
                                      Title: Senior Vice President,
                                             Chief Financial Officer,
                                             Treasurer and Assistant Secretary

                          [UGS Supplemental Indenture]

<PAGE>

                                  UGS EUROPEAN HOLDINGS, INC.

                                  By: /s/ Douglas E. Barnett
                                      ----------------------------------------
                                      Name: Douglas E. Barnett
                                      Title: Senior Vice President,
                                             Chief Financial Officer,
                                             Treasurer and Assistant Secretary

                                  UGS JAPANESE HOLDINGS, INC.

                                  By: /s/ Douglas E. Barnett
                                      ----------------------------------------
                                      Name: Douglas E. Barnett
                                      Title: Senior Vice President,
                                             Chief Financial Officer,
                                             Treasurer and Assistant Secretary

                          [UGS Supplemental Indenture]<PAGE>

                                                                     Exhibit 4.3

                                    UGS CORP.

                                  $550,000,000

                     10% SENIOR SUBORDINATED NOTES DUE 2012

                          REGISTRATION RIGHTS AGREEMENT

                                                                    May 27, 2004

Citigroup Global Markets Inc.
388 Greenwich Street
New York, New York 10013

J.P. Morgan Securities Inc.
270 Park Avenue
New York, New York 10017

Morgan Stanley & Co. Incorporated
1585 Broadway
New York, New York  10036

Ladies and Gentlemen:

            UGS Corp., a corporation organized under the laws of Delaware (the
"Company"), proposes to issue and sell to certain purchasers (the "Initial
Purchasers"), for whom Citigroup Global Markets Inc., J.P. Morgan Securities
Inc. and Morgan Stanley & Co. Incorporated (collectively the "Representatives")
are acting as representatives, $550,000,000 aggregate principal amount of its
10% Senior Subordinated Notes due 2012 (the "Securities"), upon the terms set
forth in the Purchase Agreement among the Company, the guarantors listed on
Annex A-2 thereto (the "Guarantors") and the Representatives dated May 19, 2004
(the "Purchase Agreement") relating to the initial placement (the "Initial
Placement") of the Securities. The Securities shall be guaranteed, jointly and
severally, on an unsecured senior subordinated basis, by each of the Guarantors.
To induce the Initial Purchasers to enter into the Purchase Agreement and to
satisfy a condition to your obligations thereunder, the Company and the
Guarantors agree with you for your benefit and the benefit of the holders from
time to time of the Securities (including the Initial Purchasers) (each a
"Holder" and, collectively, the "Holders"), as follows:

            1. Definitions. Capitalized terms used herein without definition
shall have their respective meanings set forth in the Purchase Agreement. As
used in this Agreement, the following capitalized defined terms shall have the
following meanings:

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            "Act" shall mean the Securities Act of 1933, as amended, and the
rules and regulations of the Commission promulgated thereunder.

            "Affiliate" shall have the meaning specified in Rule 405 under the
Act and the terms "controlling" and "controlled" shall have meanings correlative
thereto.

            "Broker-Dealer" shall mean any broker or dealer registered as such
under the Exchange Act.

            "Business Day" shall mean any day other than a Saturday, a Sunday or
a legal holiday or a day on which banking institutions or trust companies are
authorized or obligated by law to close in New York City.

            "Closing Date" shall mean the date of the first issuance of the
Securities.

            "Commission" shall mean the Securities and Exchange Commission.

            "Deferral Period" shall have the meaning indicated in Section
4(k)(ii) hereof.

            "Exchange Act" shall mean the Securities Exchange Act of 1934, as
amended, and the rules and regulations of the Commission promulgated thereunder.

            "Exchange Offer Registration Period" shall mean the period following
the consummation of the Registered Exchange Offer and ending on the earlier of
(i) the 90th day following consummation of the Registered Exchange Offer or such
longer period if extended pursuant to any of the events set forth in Sections
4(c)(ii) through (v) hereof and (ii) such time as no Exchanging Dealer holds
Registrable Securities, exclusive of any period during which any stop order
shall be in effect suspending the effectiveness of the Exchange Offer
Registration Statement.

            "Exchange Offer Registration Statement" shall mean a registration
statement of the Company on an appropriate form under the Act with respect to
the Registered Exchange Offer, all amendments and supplements to such
registration statement, including post-effective amendments thereto, in each
case including the Prospectus contained therein, all exhibits thereto and all
material incorporated by reference therein.

            "Exchanging Dealer" shall mean any Holder (which may include any
Initial Purchaser) that is a Broker-Dealer and elects to exchange for New
Securities any Securities that it acquired for its own account as a result of
market-making activities or other trading activities (but not directly from the
Company or any Affiliate of the Company).

            "Final Memorandum" shall mean the offering memorandum, dated May 19,
2004 relating to the Securities, including any and all exhibits thereto and any
information incorporated by reference therein as of such date.

            "Guarantors" shall have the meaning set forth in the preamble hereto
and shall also include any Guarantor's successors or any other of the Company's
subsidiaries that is required or elects to issue a guarantee in respect of the
Securities.

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            "Holder" shall have the meaning set forth in the preamble hereto.

            "Indenture" shall mean the Indenture relating to the Securities,
dated as of May 27, 2004, between the Company, the guarantors party thereto and
U.S. Bank National Association, as trustee, as the same may be amended from time
to time in accordance with the terms thereof.

            "Initial Placement" shall have the meaning set forth in the preamble
hereto.

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

            "Losses" shall have the meaning set forth in Section 6(d) hereof.

            "Majority Holders" shall mean, on any date, Holders of a majority of
the aggregate principal amount of Securities registered under a Registration
Statement.

            "Managing Underwriters" shall mean the investment banker or
investment bankers and manager or managers that administer an underwritten
offering, if any, under a Registration Statement.

            "NASD Rules" shall mean the Conduct Rules and the By-Laws of the
National Association of Securities Dealers, Inc.

            "New Securities" shall mean debt securities of the Company identical
in all material respects to the Securities (except that the transfer
restrictions shall be modified or eliminated, as appropriate) to be issued under
the New Securities Indenture.

            "New Securities Indenture" shall mean an indenture among the
Company, the guarantors party thereto and the New Securities Trustee, identical
in all material respects to the Indenture (except that the transfer restrictions
shall be modified or eliminated, as appropriate and no Registration Default
Damages shall apply thereto, which may be the Indenture.

            "New Securities Trustee" shall mean a bank or trust company
reasonably satisfactory to the Initial Purchasers, as trustee with respect to
the New Securities under the New Securities Indenture.

            "Prospectus" shall mean the prospectus included in any Registration
Statement (including, without limitation, a prospectus that discloses
information previously omitted from a prospectus filed as part of an effective
registration statement in reliance upon Rule 430A under the Act), as amended or
supplemented by any prospectus supplement, with respect to the terms of the
offering of any portion of the Securities or the New Securities covered by such
Registration Statement, and all amendments and supplements thereto, including
any and all exhibits thereto and any information incorporated by reference
therein.

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

            "Registered Exchange Offer" shall mean the proposed offer of the
Company and the Guarantors to issue and deliver to the Holders of the Securities
that are not prohibited by any

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law or policy of the Commission from participating in such offer, in exchange
for the Securities, a like aggregate principal amount of the New Securities.

            "Registrable Securities" shall mean (i) Securities other than those
that (A) have been registered under a Registration Statement and disposed of in
accordance therewith, (B) have been distributed to the public pursuant to Rule
144 under the Act or any successor rule or regulation thereto that may be
adopted by the Commission or (C) have become eligible to be sold pursuant to
paragraph (k) of Rule 144 of the Act and (ii) any New Securities resale of which
by the Holder thereof requires compliance with the prospectus delivery
requirements of the Act.

            "Registration Default Damages" shall have the meaning set forth in
Section 8 hereof.

            "Registration Statement" shall mean any Exchange Offer Registration
Statement or Shelf Registration Statement that covers any of the Securities or
the New Securities pursuant to the provisions of this Agreement, any 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.

            "Securities" shall have the meaning set forth in the preamble
hereto.

            "Shelf Registration" shall mean a registration effected pursuant to
Section 3 hereof.

            "Shelf Registration Period" has the meaning set forth in Section
3(b) hereof.

            "Shelf Registration Statement" shall mean a "shelf" registration
statement of the Company pursuant to the provisions of Section 3 hereof which
covers some or all of the Securities or New Securities, as applicable, on an
appropriate form under Rule 415 under the Act, or any similar rule that may be
adopted by the Commission, 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.

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

            "Trust Indenture Act" shall mean the Trust Indenture Act of 1939, as
amended, and the rules and regulations of the Commission promulgated thereunder.

            "underwriter" shall mean any underwriter of Securities in connection
with an offering thereof under a Shelf Registration Statement.

            2. Registered Exchange Offer. (a) Unless due to any change in law or
applicable interpretations thereof by the Commission's staff, the Company
determines upon advice of its outside counsel that it is not permitted to effect
the Registered Exchange Offer as contemplated by this Section 2, the Company and
the Guarantors shall prepare and, not later than the earlier to occur of March
31, 2005 and the date 30 days following delivery to the Company from the
Company's independent auditors of an audit report covering the Company's

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consolidated financial statements for the year ending December 31, 2004, shall
file with the Commission the Exchange Offer Registration Statement with respect
to the Registered Exchange Offer. The Company and the Guarantors shall use their
reasonable best efforts to cause the Exchange Offer Registration Statement to
become effective under the Act not later than 120 days after its filing date.

            (b) The Company and the Guarantors shall use their reasonable best
efforts to cause the Registered Exchange Offer to be consummated not later than
40 days after the effective date of the Exchange Offer Registration Statement.
It being the objective of such Registered Exchange Offer to enable each Holder
electing to exchange Securities for New Securities (assuming that such Holder is
not an Affiliate of the Company or the Guarantors, acquires the New Securities
in the ordinary course of such Holder's business, has no arrangements with any
person to participate in the distribution of the New Securities and is not
prohibited by any law or policy of the Commission from participating in the
Registered Exchange Offer) to trade such New Securities from and after their
receipt without any limitations or restrictions under the Act and without
material restrictions under the securities laws of a substantial proportion of
the several states of the United States.

            (c) In connection with the Registered Exchange Offer, the Company
and the Guarantors shall use their reasonable best efforts to:

                  (i) mail or cause to be mailed to each Holder of record a copy
            of the Prospectus forming part of the Exchange Offer Registration
            Statement, together with an appropriate letter of transmittal and
            related documents;

                  (ii) keep the Registered Exchange Offer open for not less than
            20 Business Days after the date notice thereof is mailed to the
            Holders (or longer if required by applicable law);

                  (iii) keep the Exchange Offer Registration Statement
            continuously effective under the Act, supplemented and amended as
            required under the Act, to ensure that it is available for sales of
            New Securities by Exchanging Dealers during the Exchange Offer
            Registration Period;

                  (iv) utilize the services of a depositary for the Registered
            Exchange Offer with an address in the Borough of Manhattan in New
            York City, which may be the Trustee, the New Securities Trustee or
            an Affiliate of either of them;

                  (v) permit Holders to withdraw tendered Securities at any time
            prior to the close of business, New York time, on the last Business
            Day on which the Registered Exchange Offer is open;

                  (vi) prior to effectiveness of the Exchange Offer Registration
            Statement, provide a supplemental letter to the Commission (A)
            stating that the Company is conducting the Registered Exchange Offer
            in reliance on the position of the Commission in Exxon Capital
            Holdings Corporation (pub. avail. May 13, 1988), Morgan Stanley and
            Co., Inc. (pub. avail. June 5, 1991); and (B) including a
            representation that the Company has not entered into any arrangement
            or

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            understanding with any person to distribute the New Securities to be
            received in the Registered Exchange Offer and that, to the best of
            the Company's information and belief, each Holder participating in
            the Registered Exchange Offer is acquiring the New Securities in the
            ordinary course of business and has no arrangement or understanding
            with any person to participate in the distribution of the New
            Securities; and

                  (vii) comply in all respects with all laws applicable to the
            Registered Exchange Offer.

            (d) Promptly after the close of the Registered Exchange Offer, the
Company and the Guarantors shall:

                  (i) accept for exchange all Securities tendered and not
            validly withdrawn pursuant to the Registered Exchange Offer;

                  (ii) deliver to the Trustee for cancellation in accordance
            with Section 4(s) all Securities so accepted for exchange; and

                  (iii) cause the New Securities Trustee to authenticate and
            deliver to each Holder of Securities a principal amount of New
            Securities equal to the principal amount of the Securities of such
            Holder so accepted for exchange provided that, in the case of any
            Securities held in global from by a depositary, authentication and
            delivery to such depositary of one or more replacement Securities in
            global form in an equivalent principal amount thereto for the
            account of such Holders in accordance with the New Securities
            Indenture shall satisfy such authentication and delivery
            requirement.

            (e) Each Holder hereby acknowledges and agrees that any
Broker-Dealer and any such Holder using the Registered Exchange Offer to
participate in a distribution of the New Securities (x) could not under
Commission policy as in effect on the date of this Agreement rely on the
position of the Commission in Exxon Capital Holdings Corporation (pub. avail.
May 13, 1988) and Morgan Stanley and Co., Inc. (pub. avail. June 5, 1991), as
interpreted in the Commission's letter to Shearman & Sterling dated July 2, 1993
and similar no-action letters; and (y) must comply with the registration and
prospectus delivery requirements of the Act in connection with any secondary
resale transaction, which must be covered by an effective registration statement
containing the selling security holder information required by Item 507 or 508,
as applicable, of Regulation S-K under the Act if the resales are of New
Securities obtained by such Holder in exchange for Securities acquired by such
Holder directly from the Company or one of its Affiliates. Accordingly, each
Holder participating in the Registered Exchange Offer shall be required to
represent to the Company that, at the time of the consummation of the Registered
Exchange Offer:

                  (i) any New Securities received by such Holder will be
            acquired in the ordinary course of business;

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                  (ii) such Holder will have no arrangement or understanding
            with any person to participate in the distribution of the Securities
            or the New Securities within the meaning of the Act; and

                  (iii) such Holder is not an Affiliate of the Company.

            (f) If any Initial Purchaser determines that it is not eligible to
participate in the Registered Exchange Offer with respect to the exchange of
Securities constituting any portion of an unsold allotment, at the request of
such Initial Purchaser, the Company shall issue and deliver to such Initial
Purchaser (exclusively for resale under a Shelf Registration Statement) or to
the person purchasing New Securities registered under a Shelf Registration
Statement as contemplated by Section 3 hereof from such Initial Purchaser, in
exchange for such Securities, a like principal amount of New Securities. The
Company shall use its reasonable best efforts to cause the CUSIP Service Bureau
to issue the same CUSIP number for such New Securities as for New Securities
issued pursuant to the Registered Exchange Offer.

            3. Shelf Registration. (a) If (i) due to any change in law or
applicable interpretations thereof by the Commission's staff, the Company
determines upon advice of its outside counsel that it is not permitted to effect
the Registered Exchange Offer as contemplated by Section 2 hereof; (ii) for any
other reason the Registered Exchange Offer is not consummated before September
15, 2005; (iii) prior to the completion of the Registered Exchange Offer, (A)
any Initial Purchaser so requests with respect to Securities that are not
eligible to be exchanged for New Securities in the Registered Exchange Offer; or
(B) any Holder (other than an Initial Purchaser) is not eligible to participate
in the Registered Exchange Offer and so notifies the Company; or (iv) in the
case of any Initial Purchaser that participates in the Registered Exchange Offer
or acquires New Securities pursuant to Section 2(f) hereof, such Initial
Purchaser does not receive freely tradeable New Securities in exchange for
Securities constituting any portion of an unsold allotment (it being understood
that (x) the requirement that an Initial Purchaser deliver a Prospectus
containing the information required by Item 507 or 508 of Regulation S-K under
the Act in connection with sales of New Securities acquired in exchange for such
Securities shall result in such New Securities being not "freely tradeable"; and
(y) the requirement that an Exchanging Dealer deliver a Prospectus in connection
with sales of New Securities acquired in the Registered Exchange Offer in
exchange for Securities acquired as a result of market-making activities or
other trading activities shall not result in such New Securities being not
"freely tradeable") and the Initial Purchaser so notifies the Company, the
Company shall effect a Shelf Registration Statement in accordance with
subsection (b) below.

            (b) (i) The Company and the Guarantors shall as promptly as
reasonably practicable (but in no event more than 60 days after so required or
requested pursuant to this Section 3, it being understood that in no event shall
the Company be required to make any such filing prior to the earlier to occur of
(x) March 31, 2005 and (y) the 30th day following delivery from our independent
auditors of an audit report covering our consolidated financial statements for
the year ending December 31, 2004, file with the Commission and shall use their
reasonable best efforts to cause to be declared effective under the Act within
120 days after the filing of the Shelf Registration Statement, a Shelf
Registration Statement relating to the offer and sale of the Securities or the
New Securities, as applicable, by the Holders thereof from time to time in
accordance with the methods of distribution elected by such Holders and set
forth in such Shelf

                                       7
<PAGE>

Registration Statement; provided, however, that no Holder (other than an Initial
Purchaser) shall be entitled to have the Securities held by it covered by such
Shelf Registration Statement unless such Holder agrees in writing to be bound by
all of the provisions of this Agreement applicable to such Holder; and provided
further, that with respect to New Securities received by an Initial Purchaser in
exchange for Securities constituting any portion of an unsold allotment, the
Company and the Guarantors may, if permitted by current interpretations by the
Commission's staff, file a post-effective amendment to the Exchange Offer
Registration Statement containing the information required by Item 507 or 508 of
Regulation S-K, as applicable, in satisfaction of its obligations under this
subsection with respect thereto, and any such Exchange Offer Registration
Statement, as so amended, shall be referred to herein as, and governed by the
provisions herein applicable to, a Shelf Registration Statement.

                  (ii) The Company and the Guarantors shall use their reasonable
            best efforts to keep the Shelf Registration Statement continuously
            effective, supplemented and amended as required by the Act, in order
            to permit the Prospectus forming part thereof to be usable by
            Holders for a period (the "Shelf Registration Period") from the date
            the Shelf Registration Statement is declared effective by the
            Commission until the earliest of (A) two years from the Closing Date
            of the Securities (or until one year from the effective date of the
            Shelf Registration Statement if the Shelf Registration Statement is
            filed at the request of the Initial Purchasers); (B) the date upon
            which all the Securities or New Securities, as applicable, covered
            by the Shelf Registration Statement can be sold pursuant to Rule 144
            without any limitations under clauses (c), (e), (f) and (h)
            thereunder; or (C) the date on which all Securities registered
            thereunder are disposed of in accordance therewith. The Company and
            the Guarantors shall be deemed not to have used their reasonable
            best efforts to keep the Shelf Registration Statement effective
            during the Shelf Registration Period if they voluntarily take any
            action in bad faith or for the purpose of avoiding the Company's or
            the Guarantors' obligations hereunder.

                  (iii) The Company and the Guarantors shall cause the Shelf
            Registration Statement and the related Prospectus and any amendment
            or supplement thereto, as of the effective date of the Shelf
            Registration Statement or such amendment or supplement, (A) to
            comply in all material respects with the applicable requirements of
            the Act; and (B) not to contain any untrue statement of a material
            fact or omit to state a material fact required to be stated therein
            or necessary in order to make the statements therein (in the case of
            the Prospectus, in the light of the circumstances under which they
            were made) not misleading.

            4. Additional Registration Procedures. In connection with any Shelf
Registration Statement and, to the extent specified below, any Exchange Offer
Registration Statement, the following provisions shall apply.

            (a)   The Company and the Guarantors shall:

                  (i) use their reasonable best efforts to furnish to each of
            the Representatives and to counsel for the Holders, not less than
            two Business Days

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<PAGE>

            prior to the filing thereof with the Commission, a draft of (and any
            subsequent material changes to) any Exchange Offer Registration
            Statement and any Shelf Registration Statement, and each amendment
            thereof and each amendment or supplement, if any, to the Prospectus
            included therein (including all documents incorporated by reference
            therein after the initial filing) and shall use their reasonable
            best efforts to reflect in each such document, when so filed with
            the Commission, such comments as the Representatives reasonably
            propose;

                  (ii) include the information set forth in Annex A hereto on
            the facing page of the Exchange Offer Registration Statement, in
            Annex B hereto in the forepart of the Exchange Offer Registration
            Statement in a section setting forth details of the Exchange Offer,
            in Annex C hereto in the underwriting or plan of distribution
            section of the Prospectus contained in the Exchange Offer
            Registration Statement, and in Annex D hereto in the letter of
            transmittal delivered pursuant to the Registered Exchange Offer;

                  (iii) if requested by an Initial Purchaser (except in the
            instance the Company is required to file a Shelf Registration
            Statement pursuant to Section 3(a)(iii)(B)), include the information
            required by Item 507 or 508 of Regulation S-K, as applicable, in the
            Prospectus contained in the Exchange Offer Registration Statement;
            and

                  (iv) in the case of a Shelf Registration Statement, include
            the names of the Holders that propose to sell Securities pursuant to
            the Shelf Registration Statement as selling security holders.

            (b) The Company and the Guarantors shall use their reasonable best
efforts to ensure that:

                  (i) any Registration Statement and any amendment thereto and
            any Prospectus forming part thereof and any amendment or supplement
            thereto complies in all material respects with the Act; and

                  (ii) any 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.

            (c) The Company and the Guarantors shall advise the Representatives,
the Holders of Securities covered by any Shelf Registration Statement and, in
the case of an effective Exchange Offer Registration Statement, any Exchanging
Dealer under such Exchange Offer Registration Statement that has provided in
writing to the Company a telephone or facsimile number and address for notices
(which requirement in the case of Representatives shall be deemed satisfied by
virtue of the execution of this Agreement), and, if requested by any
Representative or any such Holder or Exchanging Dealer, shall confirm such
advice in writing (which notice pursuant to clauses (ii)-(v) hereof shall be
accompanied by an instruction to

                                       9
<PAGE>

suspend the use of the Prospectus until the Company and the Guarantors shall
have remedied the basis for such suspension):

                  (i) when a Registration Statement and any amendment thereto
            has been filed with the Commission and when the Registration
            Statement or any post-effective amendment thereto has become
            effective;

                  (ii) of any request by the Commission for any amendment or
            supplement to the Registration Statement or the Prospectus or for
            additional information;

                  (iii) of the issuance by the Commission of any stop order
            suspending the effectiveness of the Registration Statement or the
            institution or threatening of any proceeding for that purpose;

                  (iv) of the receipt by the Company of any notification with
            respect to the suspension of the qualification of the securities
            included therein for sale in any jurisdiction or the institution or
            threatening of any proceeding for such purpose; and

                  (v) of the happening of any event that requires any change in
            the Registration Statement or the Prospectus so that, as of such
            date, they (A) do not contain any untrue statement of a material
            fact and (B) do not omit to state a material fact required to be
            stated therein or necessary to make the statements therein (in the
            case of the Prospectus, in the light of the circumstances under
            which they were made) not misleading.

            (d) The Company and the Guarantors shall use their reasonable best
efforts to prevent the issuance of any order suspending the effectiveness of any
Registration Statement or the qualification of the securities therein for sale
in any jurisdiction and, if issued, to obtain as soon as possible the withdrawal
thereof.

            (e) The Company and the Guarantors shall furnish to each Holder of
Securities covered by any Shelf Registration Statement, without charge, at least
one copy of such Shelf Registration Statement and any post-effective amendment
thereto, including all material incorporated therein by reference, and, if the
Holder so requests in writing, all exhibits thereto (including exhibits
incorporated by reference therein).

            (f) The Company and the Guarantors shall, during the Shelf
Registration Period, deliver to each Holder of Securities covered by any Shelf
Registration Statement, without charge, as many copies of the Prospectus
(including the preliminary Prospectus) included in such Shelf Registration
Statement and any amendment or supplement thereto as such Holder may reasonably
request. The Company and the Guarantors consent to the use of the Prospectus or
any amendment or supplement thereto by each of the selling Holders of Securities
in connection with the offering and sale of the Securities covered by the
Prospectus, or any amendment or supplement thereto, included in the Shelf
Registration Statement in accordance with the plan of distribution set forth in
such Shelf Registration Statement.

                                       10
<PAGE>

            (g) The Company and the Guarantors shall furnish to each Exchanging
Dealer which so requests, without charge, at least one copy of the Exchange
Offer Registration Statement and any post-effective amendment thereto, including
all material incorporated by reference therein, and, if the Exchanging Dealer so
requests in writing, all exhibits thereto (including exhibits incorporated by
reference therein).

            (h) The Company and the Guarantors shall promptly deliver to each
Initial Purchaser, each Exchanging Dealer and each other person required to
deliver a Prospectus during the Exchange Offer Registration Period, without
charge, as many copies of the Prospectus included in such Exchange Offer
Registration Statement and any amendment or supplement thereto as any such
person may reasonably request. The Company and the Guarantors consent to the use
of the Prospectus or any amendment or supplement thereto by any Initial
Purchaser, any Exchanging Dealer and any such other person that may be required
to deliver a Prospectus following the Registered Exchange Offer in connection
with the offering and sale of the New Securities covered by the Prospectus, or
any amendment or supplement thereto, included in the Exchange Offer Registration
Statement in accordance with the plan of distribution set forth in such Exchange
Offer Registration Statement.

            (i) Prior to the Registered Exchange Offer or any other offering of
Securities pursuant to any Registration Statement, the Company and the
Guarantors shall arrange, if necessary, for the qualification of the Securities
or the New Securities for sale under the laws of such jurisdictions as any
Holder shall reasonably request and shall maintain such qualification in effect
so long as required; provided that, in no event shall the Company and the
Guarantors be obligated to qualify to do business in any jurisdiction where it
is not then so qualified or to take any action that would subject it to service
of process in suits, other than those arising out of the Initial Placement, the
Registered Exchange Offer or any offering pursuant to a Shelf Registration
Statement, in any such jurisdiction where it is not then so subject.

            (j) The Company and the Guarantors shall cooperate with the Holders
of Securities to facilitate the timely preparation and delivery of certificates
representing New Securities or Securities to be issued or sold pursuant to any
Registration Statement free of any restrictive legends and in such denominations
and registered in such names as Holders may request.

            (k)   (i) Upon the occurrence of any event contemplated by
subsection (c)(v) above, the Company and the Guarantors shall promptly (or
within the time period provided for by clause (ii) hereof, if applicable)
prepare a post-effective amendment to the applicable Registration Statement or
an amendment or supplement to the related Prospectus or file any other required
document so that, as thereafter delivered to Initial Purchasers of the
Securities included therein, the Prospectus will not include an untrue statement
of a material fact or omit to state any material fact required to be stated
therein or necessary to make the statements therein, in the light of the
circumstances under which they were made, not misleading. In such circumstances,
the period of effectiveness of the Exchange Offer Registration Statement
provided for in Section 2 shall be extended by the number of days from and
including the date of the giving of a notice of suspension pursuant to Section
4(c) to and including the date when the Initial Purchasers, the Holders of the
Securities and any known

                                       11
<PAGE>

Exchanging Dealer shall have received such amended or supplemented Prospectus
pursuant to this Section.

                  (ii) Upon the occurrence or existence of any pending corporate
development or any other material event that, in the reasonable judgment of the
Company, makes it appropriate to suspend the availability of a Shelf
Registration Statement and the related Prospectus, the Company shall give notice
(without notice of the nature or details of such events) to the Holders that the
availability of the Shelf Registration is suspended and, upon actual receipt of
any such notice, each Holder agrees not to sell any Registrable Securities
pursuant to the Shelf Registration until such Holder's receipt of copies of the
supplemented or amended Prospectus provided for in Section 3(a)(i) hereof, or
until it is advised in writing by the Company that the Prospectus may be used,
and has received copies of any additional or supplemental filings that are
incorporated or deemed incorporated by reference in such Prospectus. The period
during which the availability of the Shelf Registration and any Prospectus is
suspended (the "Deferral Period") shall not exceed 45 days in any three-month
period or 90 days in any twelve-month period.

            (l) Not later than the effective date of any Registration Statement,
the Company shall provide a CUSIP number for the Securities or the New
Securities, as the case may be, registered under such Registration Statement and
provide the Trustee with printed certificates for such Securities or New
Securities, in a form eligible for deposit with The Depository Trust Company.

            (m) The Company and the Guarantors shall make generally available to
its security holders an earnings statement satisfying the provisions of Section
11(a) of the Act as soon as practicable after the effective date of the
applicable Registration Statement and in any event no later than 45 days after
the end of a 12-month period (or 90 days, if such period is a fiscal year)
beginning with the first month of the Company's first fiscal quarter commencing
after the effective date of the applicable Registration Statement.

            (n) The Company and the Guarantors shall cause the New Securities
Indenture to be qualified under the Trust Indenture Act in a timely manner.

            (o) The Company may require each Holder of Securities to be sold
pursuant to any Shelf Registration Statement to furnish to the Company such
information regarding the Holder and the distribution of such Securities as the
Company may from time to time reasonably require for inclusion in such
Registration Statement. The Company may exclude from such Shelf Registration
Statement the Securities of any Holder that fails to furnish such information
within a reasonable time after receiving such request.

            (p) In the case of any Shelf Registration Statement, the Company and
the Guarantors shall enter into customary agreements (including, if requested,
an underwriting agreement in customary form) and take all other appropriate
actions in order to expedite or facilitate the registration or the disposition
of the Securities, and in connection therewith, if an underwriting agreement is
entered into, cause the same to contain indemnification provisions and
procedures no less favorable than those set forth in Section 6 hereof.

                                       12
<PAGE>

            (q) In the case of any Shelf Registration Statement, the Company and
the Guarantors shall:

                  (i) make reasonably available for inspection by the Holders of
            Securities to be registered thereunder, any underwriter
            participating in any disposition pursuant to such Registration
            Statement, and any attorney, accountant or other agent retained by
            the Holders or any such underwriter all relevant financial and other
            records and pertinent corporate documents of the Company and its
            subsidiaries;

                  (ii) cause the Company's and the Guarantors' officers,
            directors, employees, accountants and auditors to supply all
            relevant information reasonably requested by the Holders or any such
            underwriter, attorney, accountant or agent in connection with any
            such Registration Statement as is customary for similar due
            diligence examinations;

                  (iii) make such representations and warranties to the Holders
            of Securities registered thereunder and the underwriters, if any, in
            form, substance and scope as are customarily made by issuers to
            underwriters in primary underwritten offerings and covering matters
            including, but not limited to, those set forth in the Purchase
            Agreement;

                  (iv) use reasonable best efforts to obtain opinions of counsel
            to the Company and Guarantors and updates thereof (which counsel and
            opinions (in form, scope and substance) shall be reasonably
            satisfactory to the Managing Underwriters, if any) addressed to each
            selling Holder and the underwriters, if any, covering such matters
            as are customarily covered in opinions requested in underwritten
            offerings and such other matters as may be reasonably requested by
            such Holders and underwriters;

                  (v) use reasonable best efforts to obtain "comfort" letters
            and updates thereof from the independent certified public
            accountants of the Company (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
            and financial data are, or are required to be, included in the
            Registration Statement), addressed to each selling Holder of
            Securities registered thereunder and the underwriters, if any, in
            customary form and covering matters of the type customarily covered
            in "comfort" letters in connection with primary underwritten
            offerings; and

                  (vi) deliver such documents and certificates as may be
            reasonably requested by the Majority Holders or the Managing
            Underwriters, if any, including those to evidence compliance with
            Section 4(k) and with any customary conditions contained in the
            underwriting agreement or other agreement entered into by the
            Company and the Guarantors.

                                       13
<PAGE>

The actions set forth in clauses (iii), (iv), (v) and (vi) of this paragraph (q)
shall be performed at each closing under any underwriting or similar agreement
as and to the extent required thereunder.

            (r) In the case of any Exchange Offer Registration Statement, the
Company and the Guarantors shall, if requested by an Initial Purchaser, or by a
broker dealer that holds Securities that were acquired as a result of market
making or other trading activities:

                  (i) make reasonably available for inspection by the requesting
            party, and any attorney, accountant or other agent retained by the
            requesting party, all relevant financial and other records,
            pertinent corporate documents and properties of the Company, the
            Guarantors and their respective subsidiaries;

                  (ii) cause the Company's and the Guarantors' officers,
            directors, employees, accountants and auditors to supply all
            relevant information reasonably requested by the requesting party or
            any such attorney, accountant or agent in connection with any such
            Registration Statement as is customary for similar due diligence
            examinations;

                  (iii) make such representations and warranties to the
            requesting party, in form, substance and scope as are customarily
            made by issuers to underwriters in primary underwritten offerings
            and covering matters including, but not limited to, those set forth
            in the Purchase Agreement;

                  (iv) use reasonable best efforts to obtain opinions of counsel
            to the Company and the Guarantors and updates thereof (which counsel
            and opinions (in form, scope and substance) shall be reasonably
            satisfactory to the requesting party and its counsel), addressed to
            the requesting party, covering such matters as are customarily
            covered in opinions requested in underwritten offerings and such
            other matters as may be reasonably requested by the requesting party
            or its counsel;

                  (v) use reasonable best efforts to obtain "comfort" letters
            and updates thereof from the independent certified public
            accountants of the Company (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
            and financial data are, or are required to be, included in the
            Registration Statement), addressed to the requesting party, in
            customary form and covering matters of the type customarily covered
            in "comfort" letters in connection with primary underwritten
            offerings, or if requested by the requesting party or its counsel in
            lieu of a "comfort" letter, an agreed-upon procedures letter under
            Statement on Auditing Standards No. 35, covering matters requested
            by the requesting party or its counsel; and

                  (vi) deliver such documents and certificates as may be
            reasonably requested by the requesting party or its counsel,
            including those to evidence

                                       14
<PAGE>

            compliance with Section 4(k) and with conditions customarily
            contained in underwriting agreements.

The foregoing actions set forth in clauses (iii), (iv), (v), and (vi) of this
Section shall be performed at the close of the Registered Exchange Offer.

            (s) If a Registered Exchange Offer is to be consummated, upon
delivery of the Securities by Holders to the Company (or to such other person as
directed by the Company) in exchange for the New Securities, the Company shall
mark, or caused to be marked, on the Securities so exchanged that such
Securities are being cancelled in exchange for the New Securities. In no event
shall the Securities be marked as paid or otherwise satisfied.

            (t) The Company and the Guarantors shall use their reasonable best
efforts if the Securities have been rated prior to the initial sale of such
Securities, to confirm such rating agencies will continue to rate the Securities
or the New Securities, as the case may be, covered by a Registration Statement.

            (u) In the event that any Broker-Dealer shall underwrite any
Securities or participate as a member of an underwriting syndicate or selling
group or "assist in the distribution" (within the meaning of the NASD Rules)
thereof, whether as a Holder of such Securities or as an underwriter, a
placement or sales agent or a broker or dealer in respect thereof, or otherwise,
the Company shall cooperate with such Broker-Dealer in connection with any
filings required to be made under the NASD Rules.

            (v) The Company and the Guarantors shall use their reasonable best
efforts to take all other steps necessary to effect the registration of the
Securities or the New Securities, as the case may be, covered by a Registration
Statement.

            5. Registration Expenses. The Company and the Guarantors shall bear
all expenses incurred in connection with the performance of its obligations
under Sections 2, 3 and 4 hereof and, in the event of any Shelf Registration
Statement, will reimburse the Holders for the reasonable fees and disbursements
of one firm or counsel (which shall initially be Simpson Thacher & Bartlett LLP,
but which may be another nationally recognized law firm experienced in
securities matters designated by the Majority Holders) to act as counsel for the
Holders in connection therewith.

            6. Indemnification and Contribution. (a) The Company and the
Guarantors agree to indemnify, jointly and severally, and hold harmless each
Holder of Securities or New Securities, as the case may be, covered by any
Registration Statement, each Initial Purchaser and, with respect to any
Prospectus delivery as contemplated in Section 4(h) hereof, each Exchanging
Dealer, the directors, officers, employees, Affiliates and agents of each such
Holder, Initial Purchaser or Exchanging Dealer and each person who controls any
such Holder, Initial Purchaser or Exchanging Dealer within the meaning of either
the Act or the Exchange Act against any and all losses, claims, damages or
liabilities, joint or several, to which they or any of them may become subject
under the Act, the Exchange Act or other federal or state statutory law or
regulation, at common law or otherwise, insofar as such losses, claims, damages
or liabilities (or actions in respect thereof) arise out of or are based upon
any untrue statement or alleged untrue

                                       15
<PAGE>

statement of a material fact contained in the Registration Statement as
originally filed or in any amendment thereof, or in any preliminary Prospectus
or the Prospectus, or in any amendment thereof or supplement thereto, or arise
out of or are based upon the omission or alleged omission to state therein a
material fact required to be stated therein or necessary to make the statements
therein (in the case of any preliminary Prospectus or the Prospectus, in the
light of the circumstances under which they were made) not misleading, and
agrees to reimburse each such indemnified party, as incurred, for any legal or
other expenses reasonably incurred by it in connection with investigating or
defending any such loss, claim, damage, liability or action; provided, however,
that the Company and the Guarantors will not be liable in any such case to the
extent that any such loss, claim, damage or liability arises out of or is based
upon any such untrue statement or alleged untrue statement or omission or
alleged omission made therein in reliance upon and in conformity with written
information furnished to the Company and the Guarantors by or on behalf of the
party claiming indemnification specifically for inclusion therein. This
indemnity agreement shall be in addition to any liability that the Company and
the Guarantors may otherwise have.

            (b) Each Holder of securities covered by a Registration Statement
(including each Initial Purchaser that is a Holder, in such capacity) severally
and not jointly agrees to indemnify and hold harmless the Company, each
Guarantor, each of their directors, each of their officers who signs such
Registration Statement and each person who controls the Company or a Guarantor
within the meaning of either the Act or the Exchange Act, to the same extent as
the foregoing indemnity from the Company to each such Holder, but only with
respect to written information relating to such Holder furnished to the Company
by or on behalf of such Holder specifically for inclusion in the documents
referred to in the foregoing indemnity. This indemnity agreement will be in
addition to any liability that any such Holder may otherwise have.

            (c) Promptly after receipt by an indemnified party under this
Section 6 or notice of the commencement of any action, such indemnified party
will, if a claim in respect thereof is to be made against the indemnifying party
under this Section, notify the indemnifying party in writing of the commencement
thereof; but the failure so to notify the indemnifying party (i) will not
relieve it from liability under paragraph (a) or (b) above unless and to the
extent it did not otherwise learn of such action and such failure results in the
forfeiture by the indemnifying party of substantial rights and defenses; and
(ii) will not, in any event, relieve the indemnifying party from any obligations
to any indemnified party other than the indemnification obligation provided in
paragraph (a) or (b) above. The indemnifying party shall be entitled to appoint
counsel (including local counsel) of the indemnifying party's choice at the
indemnifying party's expense to represent the indemnified party in any action
for which indemnification is sought (in which case the indemnifying party shall
not thereafter be responsible for the fees and expenses of any separate counsel,
other than local counsel if not appointed by the indemnifying party, retained by
the indemnified party or parties except as set forth below); provided, however,
that such counsel shall be reasonably satisfactory to the indemnified party.
Notwithstanding the indemnifying party's election to appoint counsel (including
local counsel) to represent the indemnified party in an action, the indemnified
party shall have the right to employ separate counsel (including local counsel),
and the indemnifying party shall bear the reasonable fees, costs and expenses of
such separate counsel if (i) the use of counsel chosen by the indemnifying party
to represent the indemnified party would present such counsel with a conflict of
interest;

                                       16
<PAGE>

(ii) the actual or potential defendants in, or targets of, any such action
include both the indemnified party and the indemnifying party and the
indemnified party shall have reasonably concluded that there may be legal
defenses available to it and/or other indemnified parties that are different
from or additional to those available to the indemnifying party; (iii) the
indemnifying party shall not have employed counsel reasonably satisfactory to
the indemnified party to represent the indemnified party within a reasonable
time after notice of the institution of such action; or (iv) the indemnifying
party shall authorize the indemnified party to employ separate counsel at the
expense of the indemnifying party. An indemnifying party will not, without the
prior written consent of the indemnified parties, settle or compromise or
consent to the entry of any judgment with respect to any pending or threatened
claim, action, suit or proceeding in respect of which indemnification or
contribution may be sought hereunder (whether or not the indemnified parties are
actual or potential parties to such claim or action) unless such settlement,
compromise or consent (A) includes an unconditional release of each indemnified
party from all liability arising out of such claim, action, suit or proceeding
and (B) does not include any statement as to or any admission of fault,
culpability or a failure to act by or on behalf of any indemnified party.

            (d) In the event that the indemnity provided in paragraph (a) or (b)
of this Section is unavailable to or insufficient to hold harmless an
indemnified party for any reason for the losses, claims, damages or liabilities
referred to therein, then each applicable indemnifying party shall have a joint
and several obligation to contribute to the aggregate losses, claims, damages
and liabilities (including legal or other expenses reasonably incurred in
connection with investigating or defending any loss, claim, liability, damage or
action) (collectively "Losses") to which such indemnified party may be subject
in such proportion as is appropriate to reflect the relative benefits received
by such indemnifying party, on the one hand, and such indemnified party, on the
other hand, from the Initial Placement and the Registration Statement which
resulted in such Losses; provided, however, that in no case shall any Initial
Purchaser be responsible, in the aggregate, for any amount in excess of the
purchase discount or commission applicable to such Security, or in the case of a
New Security, applicable to the Security that was exchangeable into such New
Security, as set forth in the Final Memorandum. If the allocation provided by
the immediately preceding sentence is unavailable for any reason, the
indemnifying party and the indemnified party shall contribute in such proportion
as is appropriate to reflect not only such relative benefits but also the
relative fault of such indemnifying party, on the one hand, and such indemnified
party, on the other hand, in connection with the statements or omissions which
resulted in such Losses as well as any other relevant equitable considerations.
Benefits received by the Company shall be deemed to be equal to the total net
proceeds from the Initial Placement (before deducting expenses) as set forth in
the Final Memorandum. Benefits received by the Initial Purchasers shall be
deemed to be equal to the total purchase discounts and commissions received in
the Initial Placement, and benefits received by any other Holders shall be
deemed to be equal to the value of receiving Securities or New Securities, as
applicable, registered under the Act. Relative fault shall be determined by
reference to, among other things, whether any untrue or any alleged untrue
statement of a material fact or omission or alleged omission to state a material
fact relates to information provided by the indemnifying party, on the one hand,
or by the indemnified party, on the other hand, the intent of the parties and
their relative knowledge, access to information and opportunity to correct or
prevent such untrue statement or omission. The parties agree that it would not
be just and equitable if contribution were determined by pro rata allocation
(even if the Holders were treated as one entity for such

                                       17
<PAGE>

purpose) or any other method of allocation which does not take account of the
equitable considerations referred to above. Notwithstanding the provisions of
this paragraph (d), no person guilty of fraudulent misrepresentation (within the
meaning of Section 11(f) of the Act) shall be entitled to contribution from any
person who was not guilty of such fraudulent misrepresentation. For purposes of
this Section, each person who controls a Holder within the meaning of either the
Act or the Exchange Act and each director, officer, employee and agent of such
Holder shall have the same rights to contribution as such Holder, and each
person who controls the Company within the meaning of either the Act or the
Exchange Act, each officer of the Company or any Guarantor who shall have signed
the Registration Statement and each director of the Company or any Guarantor
shall have the same rights to contribution as the Company, subject in each case
to the applicable terms and conditions of this paragraph (d).

            (e) The provisions of this Section will remain in full force and
effect, regardless of any investigation made by or on behalf of any Holder or
the Company or any of the indemnified persons referred to in this Section 6, and
will survive the sale by a Holder of securities covered by a Registration
Statement.

            7. Underwritten Registrations. (a) If any of the Securities or New
Securities, as the case may be, covered by any Shelf Registration Statement are
to be sold in an underwritten offering, the Managing Underwriters shall be
selected by the Majority Holders.

            (b) No person may participate in any underwritten offering pursuant
to any Shelf Registration Statement, unless such person (i) agrees to sell such
person's Securities or New Securities, as the case may be, on the basis
reasonably provided in any underwriting arrangements approved by the persons
entitled hereunder to approve such arrangements; and (ii) completes and executes
all questionnaires, powers of attorney, indemnities, underwriting agreements and
other documents reasonably required under the terms of such underwriting
arrangements.

            8. Registration Defaults. If any of the following events (each such
event, a "Registration Default") shall occur, then the Company shall pay
liquidated damages (the "Registration Default Damages") to the Holders of
Securities in respect of the Securities as follows:

            (a) if any Exchange Offer Registration Statement required by this
Agreement is not filed with the Commission prior to the earlier to occur of (x)
March 31, 2005 and (y) the 30th day following delivery from the Company's
independent auditors of an audit report covering the Company's consolidated
financial statements for the year ending December 31, 2004;

            (b) if within 120 days after the filing of the Exchange Offer
Registration Statement, the Exchange Offer Registration Statement has not been
declared effective;

            (c) if within 40 days after the effective date of the Exchange Offer
Registration Statement, the Registered Exchange Offer has not been consummated;

                                       18
<PAGE>

            (d) if obligated to do so, the Company and the Guarantors fail to
file a Shelf Registration Statement with the Commission within the time period
set forth in Section 3(b)(i) hereof;

            (e) if within 120 days after the filing of the Shelf Registration
Statement, such Shelf Registration Statement has not been declared effective; or

            (f) if after either the Exchange Offer Registration Statement or the
Shelf Registration Statement has been declared effective, such Registration
Statement thereafter ceases to be effective or usable in connection with resales
of Securities or New Securities other than in accordance with the provisions of
and during the periods specified in this Agreement,

then, Registration Default Damages shall accrue on the aggregate principal
amount of Registrable Securities from and including the date on which any such
Registration Default has occurred to, but excluding, the date on which all
Registration Defaults have been cured. Registration Default Damages shall accrue
at an initial rate of 0.25% per annum, which rate shall increase by 0.25% per
annum for each subsequent 90-day period during which such Registration Default
continues, up to a maximum of 1.00% per annum.

            9. No Inconsistent Agreements. The Company and the Guarantors have
not entered into, and agree not to enter into, any agreement with respect to
their securities that is inconsistent with the rights granted to the Holders
herein or that otherwise conflicts with the provisions hereof.

            10. Amendments and Waivers. The provisions of this Agreement may not
be amended, qualified, 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 the Holders of a majority of the aggregate
principal amount of the Registrable Securities outstanding; provided that, with
respect to any matter that directly or indirectly affects the rights of any
Initial Purchaser hereunder, the Company shall obtain the written consent of
each such Initial Purchaser against which such amendment, qualification,
supplement, waiver or consent is to be effective; provided, further, that no
amendment, qualification, supplement, waiver or consent with respect to Section
8 hereof shall be effective as against any Holder of Registrable Securities
unless consented to in writing by such Holder; and provided, further, that the
provisions of this Article 10 may not be amended, qualified, 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 the
Initial Purchasers and each Holder. Notwithstanding the foregoing (except the
foregoing provisos), a waiver or consent to departure from the provisions hereof
with respect to a matter that relates exclusively to the rights of Holders whose
Securities or New Securities, as the case may be, are being sold pursuant to a
Registration Statement and that does not directly or indirectly affect the
rights of other Holders may be given by the Majority Holders, determined on the
basis of Securities or New Securities, as the case may be, being sold rather
than registered under such Registration Statement.

            11. Notices. All notices and other communications provided for or
permitted hereunder shall be made in writing by hand-delivery, first-class mail,
telex, telecopier or air courier guaranteeing overnight delivery:

                                       19
<PAGE>

            (a) if to a Holder, at the most current address given by such holder
to the Company in accordance with the provisions of this Section 11, which
address initially is, with respect to each Holder, the address of such Holder
maintained by the Registrar under the Indenture;

            (b) if to the Representatives, initially at the address or addresses
set forth in the Purchase Agreement; and

            (c) if to the Company or the Guarantors, initially to their address
set forth in the Purchase Agreement.

            All such notices and communications shall be deemed to have been
duly given when received.

            The Initial Purchasers or the Company and the Guarantors by notice
to the other parties may designate additional or different addresses for
subsequent notices or communications.

            12. Remedies. Each Holder, in addition to being entitled to exercise
all rights provided to it herein, in the Indenture or in the Purchase Agreement
or granted by law, including recovery of liquidated or other damages, will be
entitled to specific performance of its rights under this Agreement. The Company
and the Guarantors agree that monetary damages would not be adequate
compensation for any loss incurred by reason of a breach by it of the provisions
of this Agreement and hereby agrees to waive in any action for specific
performance the defense that a remedy at law would be adequate.

            13. Successors. This Agreement shall inure to the benefit of and be
binding upon the parties hereto, their respective successors and assigns,
including, without the need for an express assignment or any consent by the
Company and the Guarantors thereto, subsequent Holders of Securities and the New
Securities, and the indemnified persons referred to in Section 6 hereof. The
Company and the Guarantors hereby agree to extend the benefits of this Agreement
to any Holder of Securities and the New Securities, and any such Holder may
specifically enforce the provisions of this Agreement as if an original party
hereto.

            14. Counterparts. This Agreement may be signed in one or more
counterparts, each of which shall constitute an original and all of which
together shall constitute one and the same agreement.

            15. Headings. The section headings used herein are for convenience
only and shall not affect the construction hereof.

            16. Applicable Law. This Agreement shall be governed by and
construed in accordance with the laws of the State of New York applicable to
contracts made and to be performed in the State of New York. The parties hereto
each hereby waive any right to trial by jury in any action, proceeding or
counterclaim arising out of or relating to this Agreement.

            17. Severability. In the event that any one of more of the
provisions contained herein, or the application thereof in any circumstances, is
held invalid, illegal or unenforceable in

                                       20
<PAGE>

any respect for any reason, the validity, legality and enforceability of any
such provision in every other respect and of the remaining provisions hereof
shall not be in any way impaired or affected thereby, it being intended that all
of the rights and privileges of the parties shall be enforceable to the fullest
extent permitted by law.

            18. Securities Held by the Company, etc. Whenever the consent or
approval of Holders of a specified percentage of principal amount of Securities
or New Securities is required hereunder, Securities or New Securities, as
applicable, held by the Company, the Guarantors or their Affiliates (other than
subsequent Holders of Securities or New Securities if such subsequent Holders
are deemed to be Affiliates solely by reason of their holdings of such
Securities or New Securities) shall not be counted in determining whether such
consent or approval was given by the Holders of such required percentage.

                                       21
<PAGE>

            If the foregoing is in accordance with your understanding of our
agreement, please sign and return to us the enclosed duplicate hereof, whereupon
this letter and your acceptance shall represent a binding agreement between the
Company, the Guarantors and the several Initial Purchasers.

                                        Very truly yours,

                                        UGS CORP.

                                        By: /s/ Douglas E. Barnett
                                            ----------------------------------
                                            Name: Douglas E. Barnett
                                            Title: Executive Vice President

                                        UGS PLM SOLUTIONS INTERNATIONAL INC.

                                        By: /s/ Douglas E. Barnett
                                            ----------------------------------
                                            Name: Douglas E. Barnett
                                            Title: Senior Vice President

                                        UGS PLM SOLUTIONS ASIA/PACIFIC
                                              INCORPORATED

                                        By: /s/ Douglas E. Barnett
                                            ----------------------------------
                                            Name: Douglas E. Barnett
                                            Title: Senior Vice President

                                        UGS JAPANESE HOLDINGS, INC.

                                        By: /s/ Douglas E. Barnett
                                            ----------------------------------
                                            Name: Douglas E. Barnett
                                            Title: Executive Vice President

                                        UGS EUROPEAN HOLDINGS, INC.

                                        By: /s/ Douglas E. Barnett
                                            ----------------------------------
                                            Name: Douglas E. Barnett
                                            Title: Executive Vice President

                                       22
<PAGE>

      The undersigned hereby acknowledges and agrees that, upon the
effectiveness of the merger of UGS Corp. with and into UGS PLM Solutions Inc.
with UGS PLM Solutions Inc. continuing as the surviving corporation under the
name "UGS Corp.", it will succeed by operation of law to all of the rights and
obligations of UGS Corp. set forth herein and that all references herein to the
"Company" shall thereupon be deemed to be references to the undersigned.

UGS PLM SOLUTIONS INC.,

By: /s/ Douglas E. Barnett
    ----------------------------------
    Name: Douglas E. Barnett
    Title: Senior Vice President

                                       23
<PAGE>

The foregoing Agreement is hereby
confirmed and accepted as of the
date first above written.

Citigroup Global Markets Inc.

By: /s/ David Wirdnam
    ------------------------------
    Name: David Wirdnam
    Title: Director

J.P. Morgan Securities Inc.

By: /s/ Jennifer Sheer
    ------------------------------
    Name: Jennifer Sheer
    Title: Vice President

Morgan Stanley & Co. Incorporated

By: /s/ [ILLEGIBLE] Espinosa
    ------------------------------
    Name: [ILLEGIBLE] Espinosa
    Title: Vice President

                                       24
<PAGE>

                                     ANNEX A

            Each broker-dealer that receives new securities for its own account
pursuant to the Exchange Offer must acknowledge that it will deliver a
prospectus in connection with any resale of such new securities. The Letter of
Transmittal states that by so acknowledging and by delivering a prospectus, a
broker-dealer will not be deemed to admit that it is an "underwriter" within the
meaning of the Act. This prospectus, as it may be amended or supplemented from
time to time, may be used by a broker-dealer in connection with resales of new
securities received in exchange for securities where such securities were
acquired by such broker-dealer as a result of market-making activities or other
trading activities. The company has agreed that, starting on the expiration date
and ending on the close of business 90 days after the expiration date, it will
make this prospectus available to any broker-dealer for use in connection with
any such resale. See "Plan of Distribution".

                                      A-1
<PAGE>

                                     ANNEX B

            Each broker-dealer that receives new securities for its own account
in exchange for securities, where such securities were acquired by such
broker-dealer as a result of market-making activities or other trading
activities, must acknowledge that it will deliver a prospectus in connection
with any resale of such new securities. See "Plan of Distribution".

                                      B-1
<PAGE>

                                     ANNEX C

                              PLAN OF DISTRIBUTION

            Each broker-dealer that receives new securities for its own account
pursuant to the Exchange Offer must acknowledge that it will deliver a
prospectus in connection with any resale of such new securities. This
prospectus, as it may be amended or supplemented from time to time, may be used
by a broker-dealer in connection with resales of new securities received in
exchange for securities where such securities were acquired as a result of
market-making activities or other trading activities. The company has agreed
that, starting on the expiration date and ending on the close of business 90
days after the expiration date, it will make this prospectus, as amended or
supplemented, available to any broker-dealer for use in connection with any such
resale. In addition, until _______ ___, ______, all dealers effecting
transactions in the new securities may be required to deliver a prospectus.

            The company will not receive any proceeds from any sale of new
securities by brokers-dealers. New securities received by broker-dealers for
their own account pursuant to the Exchange Offer may be sold from time to time
in one or more transactions in the over-the-counter market, in negotiated
transactions, through the writing of options on the new securities or a
combination of such methods of resale, at market prices prevailing at the time
of resale, at prices related to such prevailing market prices or negotiated
prices. Any such resale may be made directly to purchasers or to or through
brokers or dealers who may receive compensation in the form of commissions or
concessions from any such broker-dealer and/or the purchasers of any such new
securities. Any broker-dealer that resales new securities that were received by
it for its own account pursuant to the Exchange Offer and any broker or dealer
that participates in a distribution of such new securities may be deemed to be
an "underwriter" within the meaning of the Act and any profit of any such resale
of new securities and any commissions or concessions received by any such
persons may be deemed to be underwriting compensation under the Act. The Letter
of Transmittal states that by acknowledging that it will deliver and by
delivering a prospectus, a broker-dealer will not be deemed to admit that it is
an "underwriter" within the meaning of the Act.

            For a period of 90 days after the expiration date, the company will
promptly send additional copies of this prospectus and any amendment or
supplement to this prospectus to any broker-dealer that requests such documents
in the Letter of Transmittal.

                                      C-1
<PAGE>

                                     ANNEX D

Rider A

PLEASE FILL IN YOUR NAME AND ADDRESS BELOW IF YOU ARE A BROKER-DEALER AND WISH
TO RECEIVE 10 ADDITIONAL COPIES OF THE PROSPECTUS AND 10 COPIES OF ANY
AMENDMENTS OR SUPPLEMENTS THERETO.

Name: __________________________________
Address: _______________________________
         _______________________________

Rider B

            If the undersigned is not a Broker-Dealer, the undersigned
represents that it acquired the New Securities in the ordinary course of its
business, it is not engaged in, and does not intend to engage in, a distribution
of New Securities and it has no arrangements or understandings with any person
to participate in a distribution of the New Securities. If the undersigned is a
Broker-Dealer that will receive New Securities for its own account in exchange
for Securities, it represents that the Securities to be exchange for New
Securities were acquired by it as a result of market-making activities or other
trading activities and acknowledges that it will deliver a prospectus in
connection with any resale of such New Securities; however, by so acknowledging
and by delivering a prospectus, the undersigned will not be deemed to admit that
it is an "underwriter" within the meaning of the Act.

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