83377 Replicating page with ID numbe

I want to have a member of my group be able to sign up on a sign-in page, with their ID number, and get their own "company" page that has their unique ID number in the address. Also - on the "company" page - their is a formmail or cgimail submission form that their prospects can sign up on. This form is for an autoresponder (non unique) but also has as it's "success URL" another site that is NOT ON the host but has the person's ID number in the address. Basically - I have the [login to view URL] script and I have a few other scripts but I cannot seem to put it all together. Need some help here.