Any sentence with "recursive subdirectory searching" on this site will be immediately followed by a mention of File::Find (link to CPAN) (don't worry -- it's a standard module!)

You should, in all likelihood, be using it here. If you want examples, there are plenty on this site that should suffice, here's a handy link File::Find (link to PM Update which does nothing terribly useful but point to the documentation. Whoever suggested using Super Search was right)

Philosophy can be made out of anything. Or less -- Jerry A. Fodor