Group Policies

I would like to setup a standard group policy for windows XP. For my users to only use 1 program and be able to do nothing else. I want it in a script form so that I can just go from pc to pc and load it up. By using the group policy editor I can limit most things, but they can still delete icons and do a few other things. I want to stop them from even doing this. Any help in this matter would be greatly appreciated.