I'm sorry, I can't post more info about what I did to break it. I have NO IDEA. If I did I could fix it, but I have tried reverting to what I thought was the place where it used to work, and still no luck.

That pretty much sums up you situation, only you can help yourself. All the possible advice you could get (barring understanding of how CGI/HTTP works) for debugging your black box is contained in CGI Help Guide and The Idiot's Guide to Solving Perl CGI Problems, so go read them and try things until you figure it out.