CGI Script modification

I need an experienced CGI programmer who can modify a cgi script. This is a CGI Proxy script that needs some small and easy modifications like embedding username / password authentication menu. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Installation package that will install the software (in ready-to-run condition) on the platform(s) specified in this bid request. 3) Exclusive and complete copyrights to all work purchased. (No GPL, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site). ## Platform Linux , Unix