Plug-In System?

heres what I want to do. Instead of editing files I would like to have some sort of plug-in system. I can think of only one way to do this and that would be ot include everyfile in a DIR then call that same function (they would have same # of paramaters) but the displays a nameforce error. how can I do this?

could you post what you've done? I'm not sure that I understand what you're trying to do. Are you trying to make one main "template" file and then include the file that the user requests, or something else?