In fact, my users will have to choose a paiement method and enter code for validation. If the code are not correct, they will be redirected to a error page, wich is by default with Starpass. But if they entered correct codes, they will be redirect to a succes page in PHP that I need to create.
This page will move my users to the other usergroup they paid for.
This is pretty basic, but i'm totally noob. I'm looking for someone who will be able to create it and make it secure, like http refferrer and all those kind of things.
Feel free to PM me for more questions,
I can pay if needed.