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                                                                 EXHIBIT 10.16.5

                      AGREEMENT AND PLAN OF MERGER ADDENDUM

         THIS AGREEMENT AND PLAN OF MERGER ADDENDUM (the "Addendum") is entered
into effective as of the 29th day of March, 2004, by and between XRG, Inc.
("XRG") and RSV, Inc. ("RSV").

                                    RECITALS:

         WHEREAS, XRG and RSV are parties to an Agreement and Plan of Merger
dated February 2004 (the "Agreement and Plan of Merger"); and

         WHEREAS, the parties now desire to amend the Agreement and Plan of
Merger to reflect the parties' agreement to modify the purchase consideration as
set forth herein.

         NOW, THEREFORE, for good and valuable consideration, the receipt of
which is hereby acknowledged, the parties agree as follows:

         1.       Section 2(b) Adjustment of XRGC Shares of the Agreement and
                  Plan of Merger will be deleted and an additional 1,000,000
                  shares of XRG Common Stock ("XRGC Shares") will be issued to
                  the shareholder of RSV, Inc.

         2.       Except as modified hereby, the Agreement and Plan of Merger
                  remains in full force and effect.

XRG, INC.                                   RSV SHAREHOLDER:

By:                                         ------------------------------------
   -------------------------
         President

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

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

RSV, INC.                                   ------------------------------------

By:
   -------------------------
         President<PAGE>

                                                                   EXHIBIT 10.17

                               ARTICLES OF MERGER
                                     BETWEEN
                           XRG ACQUSITION SUB II, INC.
                            (A TENNESSEE CORPORATION)
                                       AND
                                    RSV, INC.
                            (A TENNESSEE CORPORATION)

         Pursuant to Section 48-21-107 and 48-21-109 of the Tennessee Business
Corporation Act, XRG Acquisition Sub II, Inc., a Tennessee corporation ("Sub")
and RSV, Inc., a Tennessee corporation (the "Company"), hereby adopt the
following Articles of Merger:

         1.       The attached Plan of Merger between Sub and the Company, which
is incorporated hereby by reference, has been approved and adopted by each of
the corporations in accordance with the provisions of Sections 48-21-104,
48-21-107, and 48-21-109 of the Tennessee Business Corporation Act provisions of
the Florida Business Corporation Act.

         2.       The Plan of Merger was adopted by the Board of Directors of
Sub on April ___, 2004 and duly approved by the affirmative vote of the required
percentage of all of the votes entitled to be cast by the shareholders of Sub on
April ___, 2004, in accordance with the laws of the State of Tennessee; was duly
approved by the Board of Directors of the Company on April ___, 2004, and was
duly approved on April ___, 2004, by a majority of all of the vote entitled to
be cast on the Plan of Merger by the shareholders of the Company entitled to
vote thereon in accordance with the laws of the State of Tennessee.

         3.       The Plan of Merger and the performance of the transactions
contemplated thereby were duly authorized by all action required by the laws of
Tennessee and by the Company's Articles of Incorporation.

         4.       The Plan of Merger shall be effective upon filing of these
Articles of Merger with the Secretary of state of the State of Tennessee.

         5.       On the date of filing of these Articles of Merger, the Sub
shall cease to exist as a separate corporation.

         IN WITNESS WHEREOF, each of the undersigned corporations has duly
caused these Articles of Merger to be executed by their respective duly
authorized officers as of this ___ day of April, 2004.

                                    XRG ACQUISITION SUB II, INC.

                                    By: _______________________________________
                                    Title:  ____________________________________

                                    RSV, INC.

                                    By:  _______________________________________
                                    Title:  ____________________________________
<PAGE>

                                 PLAN OF MERGER

         1.       NAMES OF MERGING CORPORATIONS

         XRG Acquisition Sub II, Inc. ("Sub"), a Tennessee corporation, a wholly
subsidiary of XRG, Inc. ("XRG"), a Delaware corporation, shall be merged with
and into RSV, Inc. ("RSV"), a Tennessee corporation.

         2.       TERMS AND CONDITIONS OF THE PROPOSED MERGER

                  2.1      THE MERGER

                  The merger of Sub into RSV (the "Merger") shall occur at the
Effective Time, as defined below, at which time the separate existence of Sub
shall cease. RSV shall be the surviving corporation (the "Surviving
Corporation") and its corporate existence, with all of its purposes, powers and
objects, shall continue unaffected and unimpaired by the Merger. (Sub and RSV
are hereinafter sometimes collectively referred to as the "Constituent
Corporations.")

                  2.2      THE SURVIVING CORPORATION

                           The Surviving Corporation, without any further act or
deed, shall (a) have the purposes and possess all the rights, privileges,
immunities, powers, franchises and authority, both public and private, and be
subject to all the restrictions, disabilities, duties and liabilities of the
Constituent Corporations, and neither the rights of creditors nor any liens upon
the property of either the Constituent Corporations shall be impaired by the
Merger; (b) be vested with all the assets and property, whether real, personal
or mixed, and every interest therein, wherever located, belonging to each of the
Constituent Corporations; and (c) be liable for all of the obligations and
liabilities of each Constituent Corporation existing immediately prior to the
Effective Time. The title to any real estate or any interest therein vested in
either of the Constituent Corporations shall not revert or in any way be
impaired by reason of the Merger.

                  2.3      ARTICLES OF INCORPORATION

                           The Articles of Incorporation of RSV as in effect
immediately prior to the Effective Time, as so amended, shall be the Articles of
Incorporation of the Surviving Corporation until the same shall thereafter be
altered, amended or repealed in accordance with the Tennessee Business
Corporation Act ("TBCA").

                  2.4      BY-LAWS

                           The By-Laws of RSV as in effect immediately prior to
the Effective Time shall be the By-Laws of the Surviving Corporation until such
shall thereafter be altered, amended or repealed in the manner provided for in
such By-Laws and in accordance with TBCA.

                  2.5      DIRECTORS AND OFFICERS

                           The Board of Directors of the Surviving Corporation
shall consist of Kevin Brennan, and the officers of the Surviving Corporation
shall be as follows:

                  OFFICES                       HOLDER

                  Chairman and                  Kevin Brennan
                  President and Secretary       c/o XRG, Inc.
                                                5301 Cypress Street, Suite 111
                                                Tampa, FL 33607

<PAGE>

                  Treasurer and                 Richard Venable
                  Vice President                3267 Est Stone Drive
                                                Kings Point, TN 37660

until their successors are elected and qualified.

         3.       MANNER AND BASIS OF CONVERTING SHARES

                  3.1      ACQUISITION SUB CAPITAL STOCK

                           Each share of Common Stock of Sub issued and
outstanding immediately prior to the Effective Date shall become one share of
Common Stock of the Surviving Corporation.

                  3.2      MTSI CAPITAL STOCK

                           Upon Effective Time, each outstanding share of RSV
("RSV Common Stock") (other than shares as to which dissenter's rights have been
perfected and not withdrawn or otherwise forfeited under applicable provisions
of the TBCA) shall by virtue of the merger and without any further action on the
part of RSV, Sub or XRG, or the shareholders thereof, be converted into the
right to receive on a pro rata basis the Merger Consideration consisting of cash
and XRG Common Stock as more fully described in the Merger Agreement and
Amendment thereto.

         4.       EFFECTIVE TIME OF THE MERGER

                           The Merger shall be come effective at the time of the
filing of the Articles of Merger (the "Effective Time").<PAGE>

                                                                   EXHIBIT 10.18

                             STOCK ESCROW AGREEMENT

         AGREEMENT dated _________________, 2004, by and among XRG, INC., a
Delaware corporation ("XRG"), RSV, INC., a Tennessee corporation ("RSV"),
RICHARD VENABLE, an individual residing in Kingsport, Tennessee ("Mr. Venable")
or ("Seller") and __________________________________________ ("Escrow Agent").

                              W I T N E S S E T H:

         WHEREAS, XRG, RSV and Seller are parties to a certain Agreement and
Plan of Merger originally dated February, 2004 as amended, March 29, 2004 (the
"Merger Agreement") pursuant to which RSV has become a wholly owned subsidiary
of XRG (the "Merger"); and

         WHEREAS, XRG expressly acknowledges pursuant to the terms of the
above-referenced Merger Agreement that it shall be responsible for all of RSV's
pre-closing obligations including without limitation, RSV's obligations which
have been personally guaranteed by Mr. Venable pursuant to Schedule 2(c) of the
Merger Agreement (the "Seller's Guaranteed Obligations"); and

         WHEREAS, in order to secure XRG's obligations to the Seller to pay-off
or refinance the Seller's Guaranteed Obligations XRG has agreed to place the
shares of RSV in escrow pending payoff or refinancing of the Seller's Guaranteed
Obligations by delivery of the RSV shares it has acquired pursuant to the Merger
to the Escrow Agent in accordance with the terms of this Stock Escrow Agreement.

         NOW, THEREFORE, in consideration of the mutual covenants contained
herein, the sufficiency and receipt of which are hereby acknowledged, the
parties agree as follows:

         1. Escrow Agent. The XRG and Seller do hereby appoint and designate
___________________________________ as the Escrow Agent for the purposes herein
set forth. The Seller and XRG agree that Escrow Agent may deposit said RSV
shares into a court registry in the event of a future dispute between the
parties, and XRG further agrees that Escrow Agent may represent Seller in any
future dispute between the parties.

         2. Deposit of Shares. XRG or Seller shall deposit with the Escrow Agent
negotiable certificates, endorsed in blank or with stock powers attached,
evidencing ________ (__) shares of common stock of RSV. All such certificates so
deposited with the Escrow Agent evidencing all RSV shares will be held and
disposed of by the Escrow Agent in accordance with the terms and provisions of
this Stock Escrow Agreement.

<PAGE>

         3. Terms. The Seller and XRG hereby authorize the Escrow Agent to keep
and preserve the certificates evidencing the RSV shares pending satisfaction,
release or payoff of the Seller's Guaranteed Obligations. XRG agrees to use its
commercially reasonably best efforts to cause the satisfaction, payoff or
refinancing of the Seller's Guaranteed Obligations as soon as practical
following the effective date of the Merger which the parties have agreed must
occur no later than forty-five (45) days following the effective date of the
Merger unless the Seller consents to such an extension based upon his
satisfaction that XRG is exercising commercially reasonable best efforts. To the
extent XRG is exercising commercially reasonable best efforts to cause the
satisfaction, refinancing or payoff of the Seller's Guaranteed Obligations then
the Seller agrees to an additional forty-five (45) day extension of this Stock
Escrow Agreement, provided that there have been no demands for payment upon the
Seller as a guarantor or acceleration of the Seller's Guaranteed Obligations to
any creditor.

         In the event that XRG is unable to cause the satisfaction, refinancing
or payoff of the Seller' Guaranteed Obligations within an agreed upon timeframe,
which may be extended by the mutual agreement of the parties, or, a demand is
made upon Mr. Venable to honor a personal guaranty, or a Seller Guaranteed
Obligation is accelerated, then Seller shall have the right after complying with
the notice provisions of this Paragraph 3, to have the RSV certificates then on
deposit with the Escrow Agent delivered to Seller, and the Escrow Agent shall,
at the end of twenty (20) days after receipt of a written demand from the
Seller, and evidence that notice of making such written demand shall have been
given to XRG, deliver to the Seller such RSV certificates evidencing the common
stock of RSV then held by Escrow Agent, unless prior to the expiration of such
twenty (20) day period, XRG shall have notified the Escrow Agent to withhold the
delivery of the RSV certificates to the Seller. If the Escrow Agent shall have
received a notice from XRG to withhold the delivery of the RSV certificates,
then Escrow Agent shall not make such delivery until the controversy with
respect thereto shall have been settled either by an agreement between the
Seller and XRG or by a final judgment of a court of competent jurisdiction.

         4. Voting Rights; Recapitalization. So long as XRG is not in default
hereunder, XRG shall have the exclusive right to exercise voting rights of the
shares on deposit with the Escrow Agent.

         5. Termination of Escrow. When satisfactory proof has been presented to
Escrow Agent that all Seller's Guaranteed Obligations have been paid off,
refinanced or satisfied or as otherwise jointly instructed by XRG and Seller,
Escrow Agent shall deliver to XRG the certificates representing the shares in
its possession, and all obligations created under this Agreement between Seller,
RSV and Escrow Agent shall thereupon cease.

         6. Duties of Escrow Agent. The Escrow Agent shall hold and dispose of
the shares in accordance with the terms of this Stock Escrow Agreement. It is
agreed that the duties of Escrow Agent are only such as are herein specifically
provided being purely ministerial in nature, and that Escrow Agent shall incur
no liability whatever,

                                       2

<PAGE>

except for willful misconduct, so long as Escrow Agent has acted in good faith.
Seller and XRG hereby release Escrow Agent from any act done or omitted to be
done by Escrow Agent in good faith in the performance of Escrow Agent's duties
hereunder.

         Escrow Agent assumes no liability under this Stock Escrow Agreement
except that of a stakeholder. If there is any dispute as to whether Escrow Agent
is obligated to deliver the pledged shares or as to whom such shares are to be
delivered, Escrow Agent will not be obligated to make any delivery of the
shares, but in such event may hold the shares until receipt by Escrow Agent of
an authorization in writing signed by all the persons having interest in such
dispute, directing the disposition of the shares, or in the absence of such
authorization, Escrow Agent may hold the shares until the final determination of
the rights of the parties in an appropriate legal proceeding. If such written
authorization is not given, or proceedings for such determination are not begun
and diligently continued, Escrow Agent may, but shall not be required, to bring
an appropriate action or proceeding for leave to deposit the shares in a court
of competent jurisdiction, pending such determination. In making delivery of the
shares in the manner provided for in this Stock Escrow Agreement, Escrow Agent
shall have no further liability in the matter; provided, however, Seller
acknowledges that Escrow Agent may continue to serve as counsel for Seller with
regard to any such dispute. XRG further acknowledges that Escrow Agent has acted
as counsel for Seller in the Merger.

         7. Expenses. In the event the performance of the conditions of the
Stock Escrow Agreement shall be subject to litigation, the prevailing party
shall be entitled to receive from the other party such attorneys' fees, expenses
and other costs that may be incurred by the prevailing party, or, by the Escrow
Agent in connection with the administration of the provisions of this Stock
Escrow Agreement.

         8. Compensation of Escrow Agent. The Escrow Agent shall receive
reasonable compensation for acting in such capacity but shall be entitled to be
reimbursed for reasonable out-of-pocket expenses incurred in so acting.

         IN WITNESS WHEREOF, a duly authorized officer of XRG and the Seller
have hereunto subscribed their names and the Escrow Agent has hereunto
subscribed his name by its respective officer thereunto duly authorized.

WITNESSES:                                   XRG, INC:

                                             XRG, INC., a Delaware corporation

_________________________________            By:______________________________

_________________________________            Its:______________________________

                                       3

<PAGE>

                                             SELLER:

________________________________             ___________________________________
                                             RICHARD VENABLE
________________________________
                                             ESCROW AGENT:

                                             By:______________________________
                                             Its:______________________________

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