At the request of Bob Shults, I am attaching our proposed form of 
Non-Disclosure Agreement.  If the enclosed meets with your approval, please 
sign the NDA and return it to me via fax (713) 646-3490.  If you have any 
comments or questions, please do not hesitate to call me at (713) 853-3399.

Tana L. Jones
Senior Legal Specialist