Strange hack
 

I havent seem anything like this before.

I would like to have a sorting system for users where i have say 5 usergroups. And each user that joins has to anwser 4 questions and based on the replies they would automatically become part of usergroup X

does this sound possible?

Yes. It Wouldn't be hard at all. Create a script that would ask the questions and process the answers. This script should return the usergroup number for the new member.

Then, you need to call the script within register.php. Where you call it depends on if you validate emails or if you manually approve users, etc.

Amy