EXHIBIT 3.44

                                 FIRST AMENDMENT
                                     TO THE
                          LIMITED PARTNERSHIP AGREEMENT
                                       OF
                    BUILDERS FIRSTSOURCE - TEXAS GROUP, L.P.

            This First Amendment ("Amendment") to the Limited Partnership
Agreement of Builders FirstSource - Texas Group, L.P., a Texas limited
partnership (the "Partnership"), is made and entered into effective as of the
15th day of February, 2000 (the "Effective Date"), by and among Builders
FirstSource - Texas GenPar, LLC (formerly Mayfield Building, LLC), a Delaware
limited liability company ("GenPar"), as the general partner and Builders
FirstSource - MBS, LLC (formerly Swain Building, LLC), a Delaware limited
liability company ("MBS"), as the limited partner.

                                    RECITALS

            A. The Partnership was formed pursuant to the Limited Partnership
Agreement of the Partnership dated as of July 13, 1999 (the "Agreement"). A
Certificate of Limited Partnership of the Partnership was filed in the office of
the Secretary of State of Texas on July 19, 1999, under the name Mayfield/Swain,
L.P. An amendment to the Certificate of Limited Partnership, changing the name
of the Partnership to Builders FirstSource - Texas Group, L.P. was filed in the
office of the Secretary of State of Texas on February 17, 2000, and the
Certificate of Limited Partnership, as so amended, remains in full force and
effect. All capitalized terms used herein and not otherwise defined have the
meaning given such terms in the Agreement.

            B. The undersigned desire to amend the Agreement as provided herein.

            Now, therefore, for and in consideration of the mutual promises
contained herein, and for other good and valuable consideration, the adequacy,
receipt, and sufficiency of which are hereby acknowledged, the undersigned
hereby agree as follows:

            1. Section 2.01 of the Agreement shall be amended to read in its
entirety as follows:

            "Section 2.01. Management of Partnership. The right to manage,
control, and conduct the business and affairs of the Partnership shall be vested
solely in the General Partner. The Limited Partners shall not take part in the
management of the affairs of the Partnership and under no circumstances may any
Limited Partner control the Partnership business or sign for or bind the
Partnership. The General Partner may, from time to time, appoint and delegate to
one or more "Officers" of the Partnership (as hereinafter defined) or other
persons such authority and duties of the General Partner as the General Partner
deems advisable. Any delegation of authority pursuant to this Section 2.01 may
be revoked at any time and with or without cause by the General Partner. Without
limiting the generality of the foregoing, and notwithstanding anything to the
contrary contained in this Agreement, the General Partner shall have the
exclusive authority to act for and on behalf of the Partnership, and no third
party shall ever be required to inquire into the authority of the General
Partner to take such action on behalf of the Partnership."



            2. Section 2.05 of the Agreement shall be renumbered as Section 2.06
of the Agreement.

            3. Section 2.04 of the Agreement shall be renumbered as Section 2.05
of the Agreement.

            4. Section 2.03 of the Agreement shall be renumbered as Section 2.04
of the Agreement.

            5. Section 2.02 of the Agreement shall be renumbered as Section 2.03
of the Agreement.

            6. A new Section 2.02 shall be added to the Agreement and read in
its entirety as follows:

            "Section 2.02. Officers.

            (a) The General Partner may, from time to time, appoint and
designate, as it deems advisable, one or more persons who are individuals to be
officers of the Partnership ("Officers" or an "Officer"). Unless the General
Partner decides otherwise, any Officer so designated shall have such authority
and perform such duties as the General Partner may delegate such Officer and
that are normally associated with that office in the context of a Texas
corporation as provided under the Texas Business Corporation Act, subject to any
specific delegation of authority and duties made to such Officer by the General
Partner pursuant to this Section 2.02. The Officers will include a President
("President"), Secretary ("Secretary"), one or more Vice Presidents ("Vice
President"), and any other Officers as the General Partner may appoint
including, but not limited to, a Treasurer ("Treasurer"), and one or more
assistant Secretaries or Treasurers ("Assistant Secretary" or "Assistant
Treasurer").

            (b) Each Officer shall hold office for the term designated and until
his successor shall be duly designated and shall qualify, or until his death,
resignation, or removal as provided in this Agreement. Any person may hold any
number of offices.

            (c) No Officer need be a Partner, Texas resident, or United States
citizen. Designation of a person as an Officer shall not of itself create any
contract rights.

            (d) Officers will have the authority and perform duties in the
management of the Partnership as provided in this Section 2.02 of the Agreement.

            (e) The Chief Executive Officer will have those powers and duties
delegated by the General Partner.

            (f) Subject to the direction of the General Partner, the President
will have general management and control of the business and property of the
Partnership in its ordinary course of business with all such powers in respect
to general management and control as are reasonably incident to such
responsibilities.



            (g) The Vice President will have those powers and duties delegated
by the General Partner or the President. If more than one, the Vice Presidents,
in the order designated by the General Partner, or if in the absence of such
designation, as determined by the length of term each has held the office of the
Vice President, will exercise the powers of the President during the President's
absence or incapacitation.

            (h) The Treasurer will have the care and custody of all of the
Partnership funds and shall deposit them in such banks or other depositories as
the General Partner directs and approves. The Treasurer shall keep a complete
and accurate account of all monies received and paid on account of the
Partnership and must render a statement of the Partnership accounts whenever the
General Partner so requires. Except as otherwise provided by the General
Partner, the Treasurer shall perform all other necessary acts and duties in
connection with the administration of the Partnership's financial affairs and
generally perform all the duties ordinarily appertaining to the office of the
Treasurer. In the absence of the Treasurer, the person designated by the General
Partner, if any, will perform the Treasurer's duties.


            (i) Each assistant Treasurer will have those powers and duties
delegated by the General Partner or President. If more than one, the Assistant
Treasurers, in the order designated by the General Partner or, if in the absence
of any designation, as determined by the length of term that each has held the
office of Assistant Treasurer, will exercise the powers of the Treasurer during
the Treasurer's absence or incapacitation.


            (j) Except as otherwise provided in this Agreement, the Secretary
shall keep the minutes of all meetings of the General Partner or consents in
lieu of such meetings in the Partnership's minute books, and shall cause notice
of the meetings to be given when requested by any person authorized to call a
meeting. The Secretary may sign with the President in the name of the
Partnership, all contracts of the Partnership. The Secretary shall, in general,
perform such other duties incident to the office of the Secretary, or as
delegated by the General Partner or the President.

            (k) Each assistant Secretary will have those powers and duties
delegated by the General Partner or the President. If more than one, the
Assistant Secretaries, in the order designated by the General Partner or, if in
the absence of such designation, as determined by the length of term each has
held the office of the Assistant Secretary, will exercise the powers of the
Secretary during the Secretary's absence or incapacitation.

            (1) Any Officer appointed by the General Partner may be removed as
such, with or without cause and at any time, by the General Partner whenever in
its judgment the best interests of the Partnership will be served thereby;
provided, however, that such removal shall be without prejudice to the contract
rights, if any, of the person so removed. Any Officer of the Partnership may
resign as such at any time upon written notice to the Partnership. Such
resignation shall be made in writing and shall take effect at the time specified
therein or, if no time is specified therein, at the time of its receipt by the
General Partner. The acceptance of a resignation shall not be necessary to make
it effective, unless expressly provided in the resignation.

            (m) The General Partner may fill any vacancy occurring at any time
and in any office of the Partnership.



            (n) The compensation, if any, of the Officers shall be fixed from
time to time by the General Partner; provided, however, that the General Partner
may delegate to one or more Officers the authority to fix the compensation of
other Officers."

            7. Except as amended hereby, the Agreement shall remain in full
force and effect, and each person executing this Amendment hereby acknowledges
the same.

            8. This Amendment may be executed in multiple counterparts, each of
which shall be deemed an original for all purposes and all of which when taken
together shall constitute a single counterpart instrument. All of the
counterpart pages shall be read as though one and shall have the same force and
effect as if all of the parties had executed a single signature page.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]



            This Amendment is executed to be effective as of the Effective Date.

                                  GENERAL PARTNER

                                  Builders FirstSource - Texas GenPar, LLC, a
                                  Delaware limited liability company

                                  By:  /s/ Donald F. McAleenan
                                       ------------------------------
                                  Name:  Donald F. McAleenan
                                  Title:  Senior Vice President

                                  LIMITED PARTNER

                                  Builders FirstSource - MBS, LLC, a Delaware
                                  limited liability company

                                  By:  /s/ Andrew T. Panaccione
                                       ------------------------------
                                            Andrew T. Panaccione, Vice President



                          LIMITED PARTNERSHIP AGREEMENT
                                       OF
                              MAYFIELD/SWAIN, L.P.

            This Limited Partnership Agreement ("Agreement") of Mayfield/Swain,
L.P. is made and entered into effective as of the 13th day of July, 1999 (the
"Effective Date"), by and between Mayfield Building LLC, a Delaware limited
liability company ("Mayfield"), as the general partner, and Swain Building, LLC,
a Delaware limited liability company ("Swain"), as the limited partner. The
general partner and the limited partner are sometimes referred to herein
individually as a "Partner" and collectively as the "Partners".

                                   WITNESSETH:

            For and in consideration of the mutual covenants set forth herein
and for other good and valuable consideration, the adequacy, receipt, and
sufficiency of which are hereby acknowledged the Partners hereby agree as
follows:

                                   ARTICLE I

                            ORGANIZATION AND PURPOSE

            Section 1.01 Formation of Limited Partnership. The Partners hereby
agree to become partners and to form a limited partnership (the "Partnership")
pursuant to Article 6132a-1 Tex. Rev. Civ. Stat. Ann., known as the Texas
Revised Limited Partnership Act (the "Act"), which shall be governed by, and
operated pursuant to, the terms and provisions of this Agreement. Mayfield shall
be the general partner of the Partnership and is hereinafter sometimes referred
to as the "General Partner". Swain shall be the limited partner and is
hereinafter sometimes referred to individually as the "Limited Partner".

            Section 1.02 Name. The name of the Partnership shall be
Mayfield/Swain, L.P. All business and affairs of the Partnership shall be
conducted solely under, and all Partnership Assets (as that term is defined in
Section 1.04) shall be held solely in, such name unless otherwise determined by
the General Partner.

            Section 1.03 Effective Date and Term. The Partnership shall be in
effect for a term beginning on the Effective Date and shall continue under this
Agreement (as amended from time to time) until dissolved upon the occurrence of
an event that causes the dissolution of the Partnership in accordance with the
provisions of this Agreement (unless reconstituted as provided herein), and
thereafter to the extent provided by applicable law, until wound up and
terminated as provided herein.

            Section 1.04 Purposes and Scope of Business. The business and
purposes of the Partnership shall be to engage in any lawful business activities
in which limited partnerships formed in the State of Texas may engage or
participate and, without limiting the foregoing, the Partnership is specifically
authorized to enter into a plan of merger (a "Plan") which meets the
requirements of the Act, whereby any domestic or foreign partnership,
corporation or other entity may merge with and into the Partnership with the
Partnership as the surviving entity as permitted



under the Act. Subject to the terms and conditions of this Agreement, the
Partnership shall have the power and authority to do all such other acts and
things as may be necessary, desirable, expedient, convenient for, or incidental
to, the furtherance and accomplishment of the foregoing objectives and purposes
and for the protection and benefit of the Partnership. The assets of the
Partnership, whether now or hereafter owned, are sometimes referred to as the
"Partnership Assets".

            Section 1.05 Documents. The General Partner, or anyone designated by
the General Partner, is hereby authorized to execute a certificate of limited
partnership of the Partnership ("Certificate of Limited Partnership") in
accordance with the Act and cause the same to be filed in the office of the
Secretary of State of the State of Texas in accordance with the provisions of
the Act. The Partnership shall promptly execute and duly file with the proper
offices in each state in which the Partnership may conduct the activities
hereinafter authorized, one or more certificates as required by the laws of each
such state in order that the Partnership may lawfully conduct the business,
purposes, and activities herein authorized in each such state, and the
Partnership shall take any other action or measures necessary in such state or
states for the Partnership to conduct such activities.

            Section 1.06 Principal Place of Business. The principal place of
business of the Partnership shall be 3403 Abram Street, Arlington, Texas 76010
or at such other place or places as may be approved by the General Partner. The
General Partner shall be responsible for maintaining at the Partnership's
principal place of business those records required by the Act to be maintained
there.

            Section 1.07 Registered Agent and Office. The Registered Agent (as
defined in the Act) for the Partnership shall be Jack S. Lewis, Jr. The
Registered Office (as defined in the Act) of the Partnership shall be 3403 Abram
Street, Arlington, Texas 76010.

            Section 1.08 Certain Definitions.

                  (a) "Accounting Date" shall mean the close of business on (i)
the date any Additional Capital Contributions are made by the Partners in a
manner other than in accordance with their then existing Percentage Interests
and (ii) the last day of each fiscal year of the Partnership.

                  (b) "Accounting Period" shall mean the period at the opening
of business on the day following any Accounting Date (or the Effective Date of
this Agreement, in the case of the first Accounting Period) and continuing until
the close of business on the next succeeding Accounting Date.

                  (c) "Certificate" shall mean a certificate issued by the
Partnership to the Partners evidencing ownership of one or more Partnership
Units.

                  (d) "Partnership Interest" shall mean the ownership interest
of a Partner in the Partnership, represented by the Partnership Units held by
such Partner.

                  (e) "Partnership Unit" shall mean a unit of ownership,
representing the ownership of the economic rights in the Partnership.



                  (f) "Percentage Interest" shall mean, with respect to a
partner, the fraction, expressed as a percentage, the numerator of which is
equal to the Partnership Units held by such Partner and the denominator of which
is equal to the aggregate Partnership Units held by all Partners.

                                   ARTICLE II

                                   OPERATIONS

            Section 2.01 Management of Partnership. The right to manage,
control, and conduct the business and affairs of the Partnership shall be vested
solely in the General Partner. The Limited Partners shall not take part in the
management of the affairs of the Partnership and under no circumstances may any
Limited Partner control the Partnership business or sign for or bind the
Partnership. Without limiting the generality of the foregoing, and
notwithstanding anything to the contrary contained in this Agreement, the
General Partner shall have the exclusive authority to act for and on behalf of
the Partnership, and no third party shall ever be required to inquire into the
authority of the General Partner to take such action on behalf of the
Partnership.

            Section 2.02 Expenses. The Partnership shall pay or reimburse the
General Partner and the Tax Matters Partner (as defined in Section 2.04) for all
direct, out-of-pocket expenses incurred by it with respect to its duties under
Sections 2.01 and 2.04 to the Partnership, including, without limitation,
accounting expenses, insurance premiums attributable directly to the
Partnership, legal fees, and other direct costs associated with the formation
and operation of the Partnership.

            SECTION 2.03 EXCULPATIONS; INDEMNITIES.

                  (A) NEITHER THE PARTNERS, THE TAX MATTERS PARTNER, THEIR
AFFILIATES NOR ANY OF THEIR RESPECTIVE SHAREHOLDERS, OFFICERS, DIRECTORS,
PARTNERS, MEMBERS, MANAGERS, EMPLOYEES OR AGENTS (INDIVIDUALLY A "COVERED
PERSON") SHALL BE LIABLE TO THE PARTNERSHIP, ANY PARTNER, OR ANY OTHER PERSON
FOR ANY ACT OR OMISSION TAKEN OR SUFFERED BY SUCH COVERED PERSON IN GOOD FAITH
AND IN THE BELIEF THAT SUCH ACT OR OMISSION WAS IN OR WAS NOT OPPOSED TO THE
BEST INTERESTS OF THE PARTNERSHIP, PROVIDED, THAT SUCH ACT OR OMISSION WAS NOT
FRAUD, WILLFUL MISCONDUCT, OR A KNOWING MATERIAL VIOLATION OF THIS AGREEMENT BY
SUCH COVERED PERSON. NO COVERED PERSON SHALL BE LIABLE TO THE PARTNERSHIP, ANY
PARTNER, OR ANY OTHER PERSON FOR ANY ACTION TAKEN BY ANY OTHER PARTNER, NOR
SHALL ANY COVERED PERSON BE LIABLE TO THE PARTNERSHIP, ANY OTHER PARTNER, OR ANY
OTHER PERSON FOR ANY ACTION OF ANY EMPLOYEE OR AGENT OF THE COVERED PERSON,
PROVIDED, SUCH ACTION IS WITHIN THE SCOPE OF THE PURPOSES OF THE PARTNERSHIP AND
THE COVERED PERSON SEEKING EXCULPATION SATISFIES THE PARAMETERS OF THE PRECEDING
SENTENCE.

                  (B) TO THE FULLEST EXTENT ALLOWED OR PERMITTED UNDER ANY
PROVISION OF APPLICABLE LAW, INCLUDING, WITHOUT LIMITATION, THE ACT, THE
PARTNERSHIP SHALL INDEMNIFY, DEFEND, AND HOLD HARMLESS EACH PARTNER, ITS
AFFILIATES AND THEIR RESPECTIVE SHAREHOLDERS, OFFICERS, DIRECTORS, PARTNERS,
MEMBERS, MANAGERS, EMPLOYEES OR AGENTS (INDIVIDUALLY AN "INDEMNITEE") TO THE
EXTENT OF THE PARTNERSHIP ASSETS, FROM AND AGAINST ANY LOSSES, EXPENSES,
JUDGMENTS, FINES, SETTLEMENTS, AND DAMAGES INCURRED BY THE PARTNERSHIP OR SUCH
INDEMNITEE



ARISING OUT OF ANY CLAIM BASED UPON ACTS (INCLUDING, WITHOUT LIMITATION,
NEGLIGENT ACTS) PERFORMED OR OMITTED TO BE PERFORMED BY THE PARTNERSHIP OR SUCH
INDEMNITEE IN CONNECTION WITH THE BUSINESS OF THE PARTNERSHIP, INCLUDING,
WITHOUT LIMITATION, COSTS, EXPENSES, AND ATTORNEYS' FEES EXPENDED IN THE
SETTLEMENT OR DEFENSE OF ANY SUCH CLAIM. ALL DECISIONS OF THE PARTNERSHIP
CONCERNING ANY ACTION ALLOWED OR PERMITTED UNDER APPLICABLE LAW CONCERNING THE
INDEMNITY OF ANY PERSON OR ENTITY BY THE PARTNERSHIP SHALL BE MADE AS DETERMINED
BY THE GENERAL PARTNER.


            Section 2.04 Tax Matters Partner. The General Partner shall act as
the "Tax Matters Partner" for accounting and state (if any) income tax purposes.
The Tax Matters Partner shall mean the Partner (a) designated as the "tax
matters partner" within the meaning of Section 6231(a)(7) of the Internal
Revenue Code of 1986, as amended from time to time (or any corresponding
provisions of succeeding law, collectively the "Code") and (b) whose
responsibilities as Tax Matters Partner include, where appropriate, commencing
on behalf of the Partnership certain judicial proceedings regarding Partnership
income tax items and informing all Partners of any administrative or judicial
proceeding involving income taxes. In exercising its responsibilities as Tax
Matters Partner, the General Partner shall have the final decision making
authority with respect to all income tax matters involving the Partnership. Any
direct out-of-pocket expense incurred by the Tax Matters Partner in carrying out
its responsibilities and duties under this Agreement shall be allocated to and
charged to the Partnership as an expense of the Partnership for which the Tax
Matters Partner shall be reimbursed.


            Section 2.05 Certificated Partnership Units. The Partnership Units
of the Partnership may be either certificated units or uncertificated units.
Certificates for certificated units of the Partnership will be in the form
approved by the General Partner. The Certficates must be signed by the General
Partner. The Partners hereby agree that the Partnership issue to each Partner a
Certificate in the number of Partnership Units set forth on such Partner's
signature page attached hereto.

                                  ARTICLE III


                                   FINANCING


            Section 3.01 Capital Contributions.

                  (a) On the Effective Date, each Partner agrees to contribute
(the "Initial Capital Contributions") to the capital of the Partnership the
amount in cash set forth on such Partner's signature page attached hereto.

                  (b) The Partners may make additional capital contributions to
the Partnership at such time and in such amounts as they unanimously agree.

            Section 3.02 Capital Accounts. For accounting and state (if any)
income tax purposes, the amount of a Partner's capital account ("Capital
Account") in the Partnership shall be determined in accordance with Regulations
Section 1.704-1(b)(2)(iv), including by:



                  (a) crediting to such account (i) all contributions to the
Partnership made by or on behalf of such Partner or his or its predecessor in
interest at their fair market value and (ii) all gains and income of the
Partnership allocated to such Partner or his or its predecessor in interest; and

                  (b) debiting to such account (i) all distributions from the
Partnership made to or on behalf of such Partner or his or its predecessor in
interest, including the fair market value of any property distributed (less any
liabilities assumed by the Partner or to which any property may be subject) and
(ii) all losses and deductions of the Partnership allocated to such Partner or
his or its predecessor in interest.


            Section 3.03 Limited Liability of Limited Partners. Notwithstanding
anything contained in this Agreement to the contrary, the liability of each
Limited Partner for any of the debts, losses, or obligations of the Partnership
shall be limited to the amount of such Limited Partner's capital contributions
pursuant to Section 3.01 hereof. Accordingly, no Limited Partner shall be
obligated to provide additional capital to the Partnership or its creditors by
way of contribution, loan, or otherwise beyond the amount of the capital
contributions required of such Limited Partner pursuant to Section 3.01 hereof.
Except as provided in the Act, no Limited Partner shall have any personal
liability whatsoever, whether to the Partnership or any third party, for the
debts of the Partnership or any of its losses beyond the amount of the Limited
Partner's capital contributions.


            Section 3.04 Treatment of Capital Contributions. Except as provided
in this Agreement to the contrary, no Partner shall be entitled to interest on
his or its contributions to the capital of the Partnership nor shall any Partner
be entitled to demand the return of all or any part of such contributions to the
capital of the Partnership.

            Section 3.05 Benefits of Agreement. Nothing in this Agreement, and,
without limiting the generality of the foregoing, in this Article III, expressed
or implied, is intended or shall be construed to give to any creditor of the
Partnership or to any creditor of any Partner or any other person or entity
whatsoever, other than the Partners and the Partnership, any legal or equitable
right, remedy, or claim under or in respect of this Agreement or any covenant,
condition, or provision herein contained, and such provisions are and shall be
held to be for the sole and exclusive benefit of the Partners and the
Partnership.

                                   ARTICLE IV

               ACCOUNTING, ALLOCATIONS, AND CURRENT DISTRIBUTIONS


            Section 4.01 Percentage Interests. For purposes of allocating
profits and losses in accordance with Section 4.02, and for purposes of
distributions under Section 4.06, each Partner shall initially have the
Percentage Interest in the Partnership set forth on such Partner's signature
page attached hereto.




            Section 4.02 Tax Status, Reports, and Allocations.

                  (a) The Partnership shall elect to be classified as an
association taxable as a corporation for federal income tax purposes. The
General Partner is hereby authorized to promptly execute and file on behalf of
the Partnership an IRS Form 8832, Entity Classification Election, with the
Internal Revenue Service (the "Service") Notwithstanding any provision contained
in this Agreement to the contrary, each of the Partners hereby recognizes that
the Partnership will not be classified as a partnership for federal income tax
purposes and, therefore, will not be subject to the provisions of Subchapter K
of the Code.

                  (b) The General Partner or, at its discretion, an accountant
("Accountant") selected by the General Partner shall prepare or cause to be
prepared all tax returns and statements, if any, that must be filed on behalf of
the Partnership with any taxing authority and shall timely file such returns or
statements.

                  (c) For accounting and state (if any) income tax purposes, all
income, gains, losses, deductions, and credits of the Partnership for each
Accounting Period shall be allocated among the Partners pro rata in accordance
with their respective Percentage Interests.


                  (d) If applicable for accounting and state (if any) income tax
purposes, the tax allocations made in accordance with Sections 4.02(e), 4.03(b),
and 4.03(c) (collectively, the "Regulatory Allocations") shall be taken into
account in allocating, for tax purposes, items of income, gain, loss,
deduction, and credit among the Partners so that, to the extent possible, the
net amount, when taken together, of such allocations of income, gain, loss,
deduction, and credit and the Regulatory Allocations made to each Partner shall
be equal to the amount that would have been allocated to each such Partner if
the Regulatory Allocations had not occurred.


                  (e) If applicable for accounting and state (if any) income tax
purposes, any loss or deductions attributable to any Partnership recourse
liability (as defined in Regulations Section 1.752-1(a)(i)) ("Recourse Debt")
must be specially allocated to any Partner who bears the economic risk of loss
with respect to the Recourse Debt to which such loss or deductions are
attributable. If any allocations are made to any Partner pursuant to the
foregoing sentence, then after any allocations required by Section 4.03 hereof
have been made but prior to allocations pursuant to Section 4.02(b), income
shall be allocated to such Partner until on a cumulative basis an aggregate
amount of income equal to such cumulative deductions and losses has been
allocated to each such Partner.

            Section 4.03 Minimum Gain and Income Offsets.

                  (a) Definitions.

                        (i) "Partner Minimum Gain" shall be "partner nonrecourse
debt minimum gain," as defined in Regulations Section 1.704-2(i)(2) and
determined in accordance with Regulations Sections 1.704-2(i)(3) and 1.704-2(k).

                        (ii) "Partner Nonrecourse Debt" has the meaning set
forth in Regulations Sections 1.704-2(b)(4) and 1.704-2(i).



                        (iii) "Partner Nonrecourse Deduction" has the meaning
set forth in Regulations Section 1.704-2(i).

                        (iv) "Partnership Minimum Gain" has the meaning set
forth in Regulations Section 1.704-2(d) and shall be determined in accordance
with the provisions of Regulations Section 1.704-2(k).

                        (v) "Regulations" means the temporary and permanent
Income Tax Regulations promulgated under the Code, as such regulations may be
amended from time to time (including corresponding provisions of succeeding
Regulations).]

                  (b) Minimum Gain.


                        (i) Notwithstanding any other provision of this
Agreement to the contrary, if the Partnership Minimum Gain on the last day of
any fiscal year is less than the Partnership Minimum Gain on the last day of the
immediately preceding fiscal year, then (before any other allocation of
Partnership items for such year under this Agreement, other than as provided
in paragraph (ii) below) there shall be specially allocated to each Partner
items of Partnership income and. gain for such year (and, if necessary,
subsequent fiscal years) in an amount equal to such Partner's share of the net
decrease in Partnership Minimum Gain (determined in accordance with Regulations
Section 1.704-2(g)). The items to be so allocated shall be determined in
accordance with Regulations Sections 1.704-2(f)(6) and 1.704-2(j)(2)(i) and
(iii). This Section 4.03(b)(i) is intended to comply with the minimum gain
chargeback requirement in Regulations Section 1.704-2(f) and shall be
interpreted consistently therewith.



                        (ii) Subsequent to any allocations under Section
4.03(b)(i) above, other than allocations of gain from the disposition of
property subject to Partner Nonrecourse Debt, if Partner Minimum Gain on the
last day of any fiscal year is less than the Partner Minimum Gain on the last
day of the immediately preceding fiscal year, then, except as provided herein,
each Partner shall be specially allocated items of Partnership income and gain
for such year (and, if necessary, subsequent fiscal years) in an amount equal to
that Partner's share, if any, (determined in accordance with Regulations Section
1.704-2(i)(4)) of the net decrease in Partner Minimum Gain (such net decrease to
be determined in a manner consistent with the provisions of Regulations Sections
1.704-2(d) and 1.704-2(g)(3)). The items to be so allocated shall be determined
in accordance with the provisions of Regulations Sections 1.704-2(i)(4) and
1.704-2(j)(2)(ii) and (iii). Notwithstanding the foregoing, no such special
allocations of income and gain shall be made to the extent that the net decrease
in Partner Minimum Gain described above arises because the liability ceases to
be Partner Nonrecourse Debt due to a conversion, refinancing, or other change in
the debt instrument that causes it to become partially or wholly a nonrecourse
liability within the meaning of Regulations Section 1.752-1(a)(2). This Section
4.03(b)(ii) is intended to comply




                  with the chargeback and other provisions of Regulations
                  Section 1.704-2(i) and shall be interpreted consistently
                  therewith.

                  (c) Qualified Income Offset. Notwithstanding any other
provision of this Agreement, if during any fiscal year any Partner (i) is
allocated pursuant to Code Section 706(d) or Regulations Section
1.751-1(b)(2)(ii) any Net Loss, loss, items of loss, deductions, or Code Section
705(a)(2)(B) expenditures, (ii) is distributed any cash or property from the
Partnership and such distributions exceed offsetting increases to such Partner's
Capital Account that are reasonably expected to occur during such year, or (iii)
receives any other adjustment, allocation, or distribution described in
Regulations Sections 1.704-1(b)(2)(ii)(d)(4), (5), or (6) and, as a result of
such adjustment, allocation, or distribution, such Partner has a Qualified
Income Offset Amount (as hereinafter defined), then items of income and gain
(including gross income) for such fiscal year or other period (and, if
necessary, subsequent fiscal years) shall (prior to any allocation pursuant to
Section 4.02 hereof) be allocated to such Partner in an amount equal to his
Qualified Income Offset Amount; provided, however, that any allocation of income
or gain shall be required under this sentence only if and to the extent that
such Partner would have a Qualified Income Offset Amount after all other
allocations provided for in this Agreement have been tentatively made as if
Sections 4.03(b) and (c) were not contained herein. As used herein, the term
"Qualified Income Offset Amount" for a Partner means the excess, if any, of (x)
the negative balance a Partner has in its Capital Account following the
adjustment, allocation, or distribution described in the preceding sentence,
over (y) the maximum amount that it is obligated (or is deemed to be obligated)
to restore to the Partnership upon liquidation as determined in accordance with
Regulations Sections 1.704-2(f), (g), and (i). This Section 4.03(c) is intended
to satisfy the provisions of Regulations Section 1.704-1(b)(2)(ii)(d) and shall
be interpreted consistently therewith.

                  (d) All elections, decisions, and other matters concerning the
allocation of profits, gains, and losses among the Partners as well as other
accounting procedures not specifically and expressly provided for by the terms
of this Agreement, shall be determined, in good faith, by the General Partner.

            Section 4.04 Accounting.

                  (a) The fiscal year of the Partnership shall end on the last
day of December of each year.

                  (b) The books of account of the Partnership shall be kept and
maintained at all times at the principal place of business of the Partnership or
at such other place or places approved by the General Partner. The books of
account shall be maintained according to federal income tax principles using the
method of accounting chosen by the General Partner, consistently applied, and
shall show all items of income and expense.

                  (c) The General Partner shall cause a balance sheet of the
Partnership dated as of the end of the fiscal year and a related statement of
income or loss for the Partnership for such fiscal year to be prepared by the
Accountant and furnished, at the expense of the Partnership, to each of the
Partners on an annual basis, within ninety (90) days after the close of each
fiscal year.



                  (d) Each Partner shall have the right at reasonable times and
upon reasonable advance notice during usual business hours to audit, examine,
and make copies of or extracts from the books of account of the Partnership.
Such right may be exercised through any agent or employee of such Partner
designated by him or it or by an independent certified public accountant
designated by such Partner. Each Partner shall bear all expenses incurred in any
examination made on behalf of such Partner.

            Section 4.05 Bank Accounts. Funds of the Partnership shall be
deposited in a Partnership account or accounts in the bank or banks as selected
by the General Partner. Withdrawals from bank accounts shall only be made by the
General Partner or such other parties as may be approved by the General Partner.

            Section 4.06 Current Distributions to Partners. Except as provided
in Section 6.05 in connection with the termination and liquidation of the
Partnership, the General Partner may distribute cash funds to the Partners at
such times and in such amounts as the General Partner determines, in its sole
discretion, except that such funds shall be distributed by the General Partner
to the Partners pro rata in accordance with their respective Percentage
Interests at the time of the distribution. In determining the amount of funds to
distribute pursuant to this Section 4.06, the General Partner may consider such
factors as the need to allocate funds to any reserves for Partnership
contingencies or any other Partnership purposes that the General Partner deems
necessary or appropriate.

            Section 4.07 Changes in Percentage Interests. If applicable for
accounting and state (if any) income tax purposes, if a Partner's Percentage
Interest changes during any fiscal year, the allocations to be made pursuant to
this Agreement shall be made in accordance with Section 706 of the Code, using
any convention permitted by Section 706 of the Code and the Regulations
promulgated thereunder and selected by the General Partner so as to equitably
effectuate the allocations of this Article IV.

                                   ARTICLE V

                                   ASSIGNMENT

            Section 5.01 Prohibited and Permitted Transfers. Except as
specifically provided in this Article V, no Limited Partner may sell, transfer,
assign, mortgage, hypothecate, or otherwise encumber or permit or suffer any
encumbrance of all or any part of his or its interest in the Partnership without
the approval of the General Partner and the General Partner may not sell,
transfer, assign, mortgage, hypothecate, or otherwise encumber or permit or
suffer any encumbrance of all or any part of its interest in the Partnership.
Any attempt so to transfer or encumber any such interest shall be null and void,
ab initio. The Partners will be excused from accepting the performance of and
rendering performance to any person other than the Limited Partner hereunder
(including any trustee or assignee of or for such Partner) as to whom such
requisite approval of the General Partner has not been rendered.



            Section 5.02 Further Restrictions on Transfer.

                  (a) In the event of any assignment or transfer permitted under
this Article, the interest so assigned or transferred shall remain subject to
all terms and provisions of this Agreement; the assignee or transferee shall be
deemed, by accepting the interest so assigned or transferred, to have assumed
all the obligations hereunder relating to the interests or rights so assigned or
transferred and shall agree in writing to the foregoing if requested by the
General Partner. Any transferee or assignee of the interest of a Partner shall
be entitled only to receive distributions hereunder until such transferee or
assignee has been admitted as a Substituted Partner (as defined in Section
5.03). Until such transferee or assignee (other than an existing Partner) is
admitted to the Partnership as a Substituted Partner, the Partner transferring
all or any portion of his or its interest to such assignee or transferee shall
remain primarily and directly liable for the performance of all his or its
obligations under this Agreement. After the admission of such assignee or
transferee as a Substituted Partner, such transferor Partner shall only be
primarily and directly liable under this Agreement or otherwise for any
obligations or liabilities accruing prior to the effective time of the admission
of such Substituted Partner, unless such transferor Partner is released in
writing from such obligations or liabilities by the General Partner.

                  (b) Any Partner making or offering to make a transfer of all
or any part of his or its interest in the Partnership shall indemnify and hold
harmless the Partnership and all other Partners from and against any costs,
damages, claims, suits, or fees suffered or incurred by the Partnership or any
such other Partner arising out of or resulting from any claims by the transferee
of such Partnership interest or any offerees of such Partnership interest in
connection with such transfer or offer.

            Section 5.03 Substituted Partner. An assignee or transferee (other
than an existing Partner) of the interest of a Partner may be admitted as a
substitute partner ("Substituted Partner") only with the approval of the General
Partner. Unless the assignee is already a General Partner, any assignee of a
Partnership interest to whose admission such consent is given shall become and
shall have only the rights and duties of a Limited Partner and the assigned
Partnership interest shall thereafter be a Limited Partner's interest. Upon the
receipt by the General Partner of an appropriate supplement to this Agreement
pursuant to which such Substituted Partner agrees to be bound by all the terms
and provisions of this Agreement, the General Partner shall reflect the
admission of a Substituted Partner and the withdrawal of the transferring
Partner, if appropriate, by preparing a supplemental exhibit, dated as of the
date of such admission and withdrawal, and by filing it with the records of the
Partnership. Any Substituted Partner shall, if required by the General Partner,
prior to such admission, also execute any other documents requested by the
General Partner, including, without limitation, an irrevocable power of attorney
in form satisfactory to the General Partner appointing the General Partner as
such person's attorney-in-fact with full power to execute, swear to,
acknowledge, and file all certificates and other instruments necessary to carry
out the provisions of this Agreement, including, without limitation, such
undertakings as the General Partner may require for the payment of all fees and
costs necessary to effect any such transfer and admission. The transferor and
transferee of the transferred interest shall be responsible for the costs
associated with the transfer of the interest, including, without limitation,
reasonable attorney's fees. Upon admission, such Substituted Partner shall be
subject to all provisions of this Agreement in the place and stead of his
assignor as if the Substituted Partner originally was a party to this Agreement.



            Section 5.04 Basis Adjustment. If applicable for accounting and
state (if any) income tax purposes, the Tax Matters Partner may cause, in its
sole and absolute discretion, the Partnership to elect pursuant to Section 754
of the Code and the Regulations thereunder to adjust the basis of the
Partnership Assets as provided by Sections 743 or 734 of the Code and the
Regulations thereunder.

            Section 5.05 Other Restricted Transfers. If applicable for
accounting and state (if any) income tax purposes, notwithstanding any other
provision herein to the contrary, unless prior written consent is given by the
General Partner, no transfer of any interest in the Partnership may be made to
any person who is related (within the meaning of Regulations Section 1.752-4(b))
to any lender of the Partnership whose loan constitutes a nonrecourse liability
of the Partnership.

            Section 5.06 Merger.

                  (a) The Partnership may enter into the plan of merger (the
"Plan"), attached hereto as Exhibit A, which meets the requirements of the Act,
whereby any domestic or foreign partnership, corporation or other entity may
merge with and into the Partnership with the Partnership as the surviving entity
as permitted under the Act. The Plan is hereby approved and the General Partner
is hereby authorized to execute the Plan on behalf of the Partnership.

                  (b) At any time before articles of merger are certified by the
Secretary of State of Texas, the Plan may be abandoned by the Partnership upon
the written consent of the General Partner without the further consent of or
action by the Limited Partners. The General Partner is hereby authorized to take
such action as is necessary to effect such abandonment.

                                   ARTICLE VI

              WITHDRAWAL, DISSOLUTION, TERMINATION, AND LIQUIDATION

            Section 6.01 Withdrawal. No Limited Partner shall at any time retire
or withdraw from the Partnership without obtaining the approval of the General
Partner, and the General Partner shall not retire or withdraw from the
Partnership at any time. Retirement or withdrawal by any Partner in
contravention of this Section 6.01 shall subject such Partner to liability for
all damages caused any other Partner (other than a Partner who is, at the time
of such withdrawal, in default under this Agreement) by such retirement or
withdrawal and the consequential dissolution of the Partnership. Any notice of
withdrawal must be in writing.

            Section 6.02 Dissolution of the Partnership. The Partnership shall
be dissolved upon the occurrence of any of the following:

                  (a) The withdrawal, as defined in the Act, of a General
Partner, unless:

                        (i) the remaining General Partner, if any, elects in
      writing within ninety (90) days after such event to reconstitute the
      Partnership, to continue as the General Partner, and to continue the
      Partnership and its business, or



                        (ii) there is no remaining General Partner, then within
      ninety (90) days after such event, all of the Limited Partners agree to
      appoint in writing a successor General Partner, as of the date of the
      withdrawal of the General Partner, and agree to reconstitute the
      Partnership and continue the business of the Partnership, and such
      successor General Partner agrees in writing to accept such election; or

                  (b) The sale or other disposition, not including an exchange,
of substantially all of the assets of the Partnership (except under
circumstances where all or a portion of the purchase price is payable after the
closing of the sale or other disposition);

                  (c) December 31, 2049, unless extended by the consent of all
Partners; or

                  (d) Subject to any obligations of the Partnership, when
approved by the General Partner.

Nothing contained in this Section 6.02 is intended to grant to any Partner the
right to dissolve the Partnership at will (by retirement, resignation,
withdrawal, or otherwise) or to exonerate any Partner from liability to the
Partnership and the remaining Partners if he or it dissolves the Partnership at
will.

            Section 6.03 Continuation of Partnership. If the Partnership is
continued as provided in Section 6.02(a)(i) or (ii), then, as of the date of
withdrawal, the General Partner with respect to which an event of withdrawal
under Section 6.02 has occurred (or his or its estate or successor in interest)
(the "Withdrawing General Partner") shall have none of the powers of a General
Partner under this Agreement or applicable law and shall have only the rights
and powers of an assignee of a Partner hereunder to share in any Partnership
profits, losses, gains, and distributions in accordance with his or its
Percentage Interest and shall have no other rights or powers of a Partner
hereunder.

            Section 6.04 Withdrawal, etc. of a Limited Partner. The withdrawal,
termination (in the case of a Limited Partner that is a trust), dissolution and
termination (in the case of a Limited Partner that is a partnership),
dissolution (in the case of a Limited Partner that is a corporation or limited
liability company), retirement, or adjudication as a bankrupt of a Limited
Partner (the "Withdrawing Limited Partner") shall not dissolve the Partnership,
but the rights of such Withdrawing Limited Partner to share in the profits and
losses of the Partnership and to receive distributions of Partnership funds
shall, upon the happening of such an event, pass to the Withdrawing Limited
Partner's successors in interest subject to this Agreement, and the Partnership
shall continue as a limited partnership.

            Section 6.05 Termination and Liquidation of the Partnership.

                  (a) Upon dissolution of the Partnership unless continued
pursuant to Section 6.03, the Partnership shall be terminated as rapidly as
business circumstances will permit. At the direction of the General Partner, or
a Partner approved by the Limited Partners if the dissolution of the Partnership
is caused by the withdrawal of the General Partner (the General Partner or the
other Partner, as the case may be, being herein called the "Terminating
Partner"), a full accounting of the assets and liabilities of the Partnership
shall be taken and a statement of the



Partnership Assets and a statement of each Partner's Capital Account shall be
furnished to all Partners as soon as is reasonably practicable. The Terminating
Partner shall take such action as is necessary so that the Partnership's
business shall be terminated, its liabilities discharged, and its assets
distributed as hereinafter described. The Terminating Partner may, in his or its
sole discretion, either sell all or a part of the Partnership Assets, distribute
all or a part of the Partnership Assets in kind to the Partners, or sell part
and distribute part of the Partnership Assets in kind to the Partners (i.e., a
combination of the two approaches); provided, however, that the Terminating
Partner shall ascertain the fair market value of the Partnership Assets by
appraisal or other reasonable means of all Partnership Assets remaining unsold
and each Partner's Capital Account shall be charged or credited, as the case may
be, as if such Partnership Assets had been sold at their fair market value and
the income, gains, losses, deductions, and credits realized thereby had been
allocated to the Partners in accordance with Article IV hereof. A reasonable
period of time shall be allowed for the orderly termination of the Partnership
to minimize the normal losses of a liquidation process.

                  (b) After the payment of all expenses of liquidation and of
all debts and liabilities of the Partnership in such order or priority as
provided by law (including any debts or liabilities to Partners, who shall be
treated as secured or unsecured creditors, as may be the case, to the extent
permitted by law, for sums loaned to the Partnership, if any, as distinguished
from capital contributions) and after all resulting items of Partnership income,
gain, credit, loss, or deduction are credited or debited to the Capital Accounts
of the Partners in accordance with Articles III and IV hereof, all remaining
Partnership Assets shall then be distributed among the Partners in accordance
with their relative positive Capital Account balances. Upon termination, a
Partner may not demand and receive cash in return for such Partner's capital
contributions and no Partner shall have any obligation to restore any deficit
that may then exist in that Partner's Capital Account. Distribution on
termination may be made by the distribution to each Partner of an undivided
interest in any asset of the Partnership that has not been sold at the time of
termination of the Partnership.

            Section 6.06 General Partner Not Personally Liable. No General
Partner nor any affiliate of any General Partner shall be personally liable for
the return of the Capital Contributions of any Partner, and such return shall be
made solely from available Partnership Assets, if any, and each Limited Partner
hereby waives any and all claims it may have against any General Partner or any
such affiliate in this regard.

            Section 6.07 Provisions Cumulative. All provisions of this Agreement
relating to the dissolution, liquidation, and termination of the Partnership
shall be cumulative to the extent not inconsistent with other provisions herein;
that is, the exercise or use of one of the provisions hereof shall not preclude
the exercise or use of any other provision of this Agreement to the extent not
inconsistent therewith.

                                  ARTICLE VII

                                     GENERAL

            Section 7.01 Competing Business. Notwithstanding anything to the
contrary contained in or inferable from this Agreement, the Act, or any other
statute or principle of law,



neither the Partners nor any of their shareholders, directors, officers,
employees, partners, agents, family members, or affiliates (each a "Partner
Affiliate") shall be prohibited or restricted in any way from investing in or
conducting, either directly or indirectly, and may invest in and/or conduct,
either directly or indirectly, businesses of any nature whatsoever, including
the ownership and operation of businesses or properties similar to or in the
same geographical area as those held by the Partnership. Any investment in or
conduct of any such businesses by a Partner or any Partner Affiliate shall not
give rise to any claim for an accounting by the other Partners or the
Partnership or any right to claim any interest therein or the profits therefrom.

            Section 7.02 LIMITED PARTNER REPRESENTATIONS. NOTWITHSTANDING
ANYTHING CONTAINED IN THIS AGREEMENT TO THE CONTRARY, EACH LIMITED PARTNER
HEREBY REPRESENTS AND WARRANTS TO THE PARTNERSHIP, THE GENERAL PARTNER, AND TO
EACH OFFICER, DIRECTOR, SHAREHOLDER, MEMBER, PARTNER, CONTROLLING PERSON, AND
AGENT OF THE GENERAL PARTNER THAT: (a) THE INTEREST IN THE PARTNERSHIP OF SUCH
LIMITED PARTNER IS ACQUIRED FOR INVESTMENT PURPOSES ONLY FOR HIS OR ITS OWN
ACCOUNT AND NOT WITH A VIEW TO OR IN CONNECTION WITH ANY DISTRIBUTION, REOFFER,
RESALE, OR OTHER DISPOSITION NOT IN COMPLIANCE WITH THE SECURITIES ACT OF 1933,
AS AMENDED, AND THE RULES AND REGULATIONS THEREUNDER (THE "1933 ACT") AND
APPLICABLE STATE SECURITIES LAWS; (b) SUCH LIMITED PARTNER, ALONE OR TOGETHER
WITH HIS OR ITS REPRESENTATIVES, POSSESSES SUCH EXPERTISE, KNOWLEDGE, AND
SOPHISTICATION IN FINANCIAL AND BUSINESS MATTERS GENERALLY, AND IN THE TYPE OF
TRANSACTIONS IN WHICH THE PARTNERSHIP PROPOSES TO ENGAGE IN PARTICULAR, THAT HE
OR IT IS CAPABLE OF EVALUATING THE MERITS AND ECONOMIC RISKS OF ACQUIRING AND
HOLDING HIS OR ITS PARTNERSHIP INTEREST, AND THAT HE OR IT IS ABLE TO BEAR ALL
SUCH ECONOMIC RISKS NOW AND IN THE FUTURE; (c) SUCH LIMITED PARTNER HAS HAD
ACCESS TO ALL OF THE INFORMATION WITH RESPECT TO THE INTEREST ACQUIRED BY HIM OR
IT UNDER THIS AGREEMENT THAT HE OR IT DEEMS NECESSARY TO MAKE A COMPLETE
EVALUATION THEREOF AND HAS HAD THE OPPORTUNITY TO QUESTION THE GENERAL PARTNER
CONCERNING SUCH INTEREST; (d) SUCH LIMITED PARTNER'S DECISION TO ACQUIRE HIS OR
ITS INTEREST FOR INVESTMENT HAS BEEN BASED SOLELY UPON THE EVALUATION MADE BY
HIM OR IT, (e) SUCH LIMITED PARTNER IS AWARE THAT HE OR IT MUST BEAR THE
ECONOMIC RISK OF HIS OR ITS INVESTMENT IN THE PARTNERSHIP FOR AN INDEFINITE
PERIOD OF TIME BECAUSE INTERESTS IN THE PARTNERSHIP HAVE NOT BEEN REGISTERED
UNDER THE 1933 ACT OR UNDER THE SECURITIES LAWS OF ANY STATES, AND, THEREFORE,
CANNOT BE SOLD UNLESS SUCH INTERESTS ARE SUBSEQUENTLY REGISTERED UNDER THE 1933
ACT AND ANY APPLICABLE STATE SECURITIES LAWS OR AN EXEMPTION FROM REGISTRATION
IS AVAILABLE; (f) SUCH LIMITED PARTNER IS AWARE THAT ONLY THE PARTNERSHIP CAN
TAKE ACTION TO REGISTER SUCH INTEREST IN THE PARTNERSHIP AND THE PARTNERSHIP IS
UNDER NO SUCH OBLIGATION AND DOES NOT PROPOSE TO ATTEMPT TO DO SO; AND (g) SUCH
LIMITED PARTNER IS AWARE THAT THIS AGREEMENT PROVIDES RESTRICTIONS ON THE
ABILITY OF A LIMITED PARTNER TO SELL, TRANSFER, ASSIGN, MORTGAGE,



HYPOTHECATE, OR OTHERWISE ENCUMBER HIS OR ITS INTEREST IN THE PARTNERSHIP.

            Section 7.03 Notice.

                  (a) All notices, demands, or requests provided for or
permitted to be given pursuant to this Agreement must be in writing.

                  (b) All notices, demands, and requests to be sent to a
Partner, any Distributee(s) (or their Agent) of the interest of a Partner, or
any Substituted Partner pursuant to this Agreement shall be deemed to have been
properly given or served if: (i) personally delivered, (ii) deposited prepaid
for next day delivery by Federal Express, or other similar overnight courier
services, addressed to such Partner, (iii) deposited in the United States mail,
addressed to such Partner, prepaid and registered or certified with return
receipt requested, or (iv) transmitted via telecopier or other similar device to
the attention of such Partner, all at the address or telecopy number for such
Partner set forth on such Partner's signature page attached hereto (as may be
changed in accordance with subsection (d) below).

                  (c) All notices, demands, and requests so given shall be
deemed received: (i) when personally delivered, (ii) twenty-four (24) hours
after being deposited for next day delivery with an overnight courier, (iii)
forty-eight (48) hours after being deposited in the United States mail, or (iv)
twelve (12) hours after being telecopied or otherwise transmitted and receipt
has been confirmed.

                  (d) The Partners, any Substituted Partners, and their
respective Distributee(s)(or their Agent) shall have the right from time to
time, and at any time during the term of this Agreement, to change their
respective addresses and each shall have the right to specify as his or its
address any other address within the United States of America by giving to the
other parties at least thirty (30) days written notice thereof, in the manner
prescribed in Section 7.03(b); provided however, that to be effective, any such
notice must be actually received (as evidenced by a return receipt).

                  (e) All distributions to any Partner shall be made at the
address to which notices are to be sent unless otherwise specified in writing by
such Partner.

            Section 7.04 Amendments. Amendments and supplements may be made to
or restatements made of this Agreement or the Certificate of Limited Partnership
(or any exhibits or schedules attached to any of them), from time to time by the
General Partner, without the consent of any of the other Partners, to effect any
amendments which amend this Agreement to admit Substituted Partners, to reflect
any transfers, assignments, admissions, withdrawals, or conversions authorized
by this Agreement, or to effect any non-material amendments to this Agreement or
the Certificate of Limited Partnership. All other amendments to this Agreement
and the Certificate of Limited Partnership shall require the unanimous approval
of the Partners.

            Section 7.05 GOVERNING LAW. THE RIGHTS AND OBLIGATIONS OF THE
PARTNERS HEREUNDER SHALL BE INTERPRETED, CONSTRUED AND ENFORCED IN ACCORDANCE
WITH THE LAWS OF THE STATE OF TEXAS.



            Section 7.06 Rule of Construction. The general rule of construction
for interpreting a contract, which provides that the provisions of a contract
should be construed against the party preparing the contract, is waived by the
parties. Each party acknowledges that he or it was represented by separate legal
counsel in this matter who participated in the preparation of this Agreement or
he or it had the opportunity to retain counsel to participate in the preparation
of this Agreement but chose not to do so.

            Section 7.07 Entire Agreement. This Agreement, including all
exhibits to this Agreement and, if any, exhibits to such exhibits, contains the
entire agreement among the parties relative to the matters contained in this
Agreement.

            Section 7.08 Waiver. No consent or waiver, express or implied, by
any Partner to or for any breach or default by any other Partner in the
performance by such other Partner of his or its obligations under this Agreement
shall be deemed or construed to be a consent or waiver to or of any other breach
or default in the performance by such other Partner of the same or any other
obligations of such other Partner under this Agreement. Failure on the part of
any Partner to complain of any act or failure to act of any of the other
Partners or to declare any of the other Partners in default, regardless of how
long such failure continues, shall not constitute a waiver by such Partner of
his or its rights hereunder.

            Section 7.09 Severability. If any provision of this Agreement or the
application thereof to any person or circumstance shall be invalid or
unenforceable to any extent, the remainder of this Agreement and the application
of such provisions to other persons or circumstances shall not be affected
thereby, and the intent of this Agreement shall be enforced to the greatest
extent permitted by law.

            Section 7.10 Binding Agreement. Subject to the restrictions on
transfers and encumbrances set forth in this Agreement, this Agreement shall
inure to the benefit of and be binding upon the undersigned Partners and their
respective legal representatives, successors, and assigns. Whenever, in this
Agreement, a reference to any party or Partner is made, such reference shall be
deemed to include a reference to the legal representatives, successors, and
assigns of such party or Partner.

            Section 7.11 Tense and Gender. Unless the context clearly indicates
otherwise, the singular shall include the plural and vice versa. Whenever the
masculine, feminine, or neuter gender is used inappropriately in this Agreement,
this Agreement shall be read as if the appropriate gender was used.

            Section 7.12 Captions. Captions are included solely for convenience
of reference and if there is any conflict between captions and the text of this
Agreement, the text shall control.

            Section 7.13 Counterparts. This Agreement may be executed in
multiple counterparts, each of which shall be deemed an original for all
purposes and all of which when taken together shall constitute a single
counterpart instrument. Executed signature pages to any counterpart instrument
may be detached and affixed to a single counterpart, which single counterpart
with multiple executed signature pages affixed thereto constitutes the original



counterpart instrument. All of these counterpart pages shall be read as though
one and they shall have the same force and effect as if all of the parties had
executed a single signature page.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]



      The undersigned has executed and delivered this Limited Partnership
Agreement of Mayfield/Swain, L.P., to be effective as of the Effective Date.

                               GENERAL PARTNER

                               MAYFIELD BUILDING, LLC,
                               a Delaware limited liability company

                               By: /s/ Donald F. McAleenan
                                   ------------------------------------------
                                   Donald F. McAleenan, Senior Vice President

Initial Capital Contribution:  $100.00

Issued Partnership Units:      One Hundred (100)

Percentage Interest:           1.00%



      The undersigned has executed and delivered this Limited Partnership
Agreement of Mayfield/Swain, L.P., to be effective as of the Effective Date.

                               LIMITED PARTNER

                               SWAIN BUILDING, LLC,
                               a Delaware limited liability company

                               By: /s/ Donald F. McAleenan
                                   ------------------------------------------
                                   Donald F. McAleenan, Senior Vice President

Initial Capital Contribution:  $9,900.00

Issued Partnership Units:      Nine Thousand, Nine Hundred (9,900)

Percentage Interest:           99.00%