CONFIDENTIAL LOCK-UP AGREEMENT
FEBRUARY 26, 2004
Continental Southern Resources, Inc.
111 Presidential Blvd.
Bala Cynwyd, PA 19004
Attention: Board of Directors
Continental Southern Resources, Inc., a Nevada corporation (the "Parent"), CSOR Acquisition Corp., a
Delaware corporation and subsidiary of the Parent ("Merger Sub"), NSNV, Inc., a Texas corporation (the
"Company"), have entered into the Agreement and Plan of Merger (the "Merger Agreement") dated as of
February 26, 2004, which provides, among other things, that the Company will merge with and into the Merger
Sub (the "Merger") upon the terms and subject to the conditions set forth in the Merger Agreement (capitalized
terms not defined in this Certificate shall have the meanings ascribed to them in the Merger Agreement).
The undersigned understands and acknowledges that immediately before or contemporaneously with the Closing
of the Merger Agreement, Parent will close a private placement of shares of its common stock with gross
proceeds of at least $45,000,000 and that in order to complete the private placement, the Company's placement
agent has requested that certain holders of shares of Company common stock agree not to sell, transfer or
otherwise dispose of their shares for a certain period of time, as more fully described below. The undersigned
acknowledges that completion of the private placement will be of material benefit to the Parent and to the
undersigned as a beneficial owner of the Parent's common stock.
In addition, under the terms of the Merger Agreement, the undersigned is required to execute and deliver this
Lock-Up Agreement as a condition to Parent's closing of the transactions contemplated by the Merger
Agreement, including the Merger.
In order to facilitate both the Merger and the private placement described above, and for other good and
valuable consideration the receipt and sufficiency of which are hereby acknowledged, the undersigned hereby
agrees to the restr