Keyless remote help!!!

I picked up a seperate keyless entry remote for my 04 grand prix. It is from a different car but I was needing to program it to work for this one. It is the same type of remote as the one I have for the car. Can anyone help me??????????????

This is for the Grand Prix.
http://tacgp.clubgp.com/custom_mods/keyfob/index.html
http://img.photobucket.com/albums/v425/kustomkid54/1998PontiacGrandPrixGTP004.jpg

thanks i will try that and see what happens. thanks again.