i need a postback script for adscendmedia

Hi i need a postback script for adscendmedia. I have a points based api widget that i need a postback script to communicate with the widget so that when a user completes 1000 points it will return a signup form for my affiliates program that i have. I basically just need the postback script and it should postback and record the user ip, the offer completed and the amount of points total that the user has completed. And when they have reached the amount of points needed i would like to return the signup form so the user can signup with my affiliates network. If you need more details please feel free to contact me about it should be a pretty easy job i just don't know enough about php to write it myself and i would like it to work without messing with it too much thanks.