First of all thanks for all the helpful advice.
It's great to have a site like this to turn to for help.

My question is this (I think this idea would be valuable for many):

I would like to have members of my affiliate program be able to promote a more SE friendly URL like:
http://profitblaze.net/4/admin

instead of http://profitblaze.net/x.cgi?id=admin

Is there a way to setup a rewrite in the "4" directory to automatically insert the "x.cgi?id=" before the affiliate code?

I have been searching all over the net all day and finally found your site. Can you help?

Sincerely,
Mark Kessler

http://profitblaze.net

Check out our Apache forum (it's a subforum within Web Hosting) for something called mod_rewrite. You should find your answer there :) What you're looking for can be done with an edit to your .htaccess file.