CGI Script Modification

Apache version 1.3.31 (Unix) PERL version 5.8.0 PHP version 4.3.3 MySQL version 4.0.18-standard Need a CGI script I use to be slightly modified. It's a sales-tracking script I use for an adult AVS site. The script uses SSI to write a cookie to a surfer's PC when they first visit my site. The cookie contains the referring URL, and a few minutes after a surfer logs into the member's page of my site, I'm sent an email notification with the referer URL which lets me know which of my traffic sources generated the sale. The problem with this is that some members already have passwords to access my site. So if they close their browser or delete the cookie and return to my site later on in the same day, I get false sales notification emails. What I need is for the script to send the sales email with the referrer URL only if the surfer has clicked on a link to the credit card/membership sign-up page prior to entering the members' area. Need at least one month's support. This is a non-commercial script. I have provided a download of it below. Contact me if you need any other information usch as billing processor, sign-up page URL, etc. NOTE: I'd be willing to accept a PHP version of this if it meets the same requirements and functions at the same level of the CGI version. If coded in PHP, must be easy to install/remove. In the near-future I will also be needing a programmer that can create simple Flash mini-games with sound (Pac-Man and Tetris clones) that reveal a picture as the player's game progresses. Contact for details.