For another option you might look into ICE which is 100% Perl. I used it with very minor mods to index our Novell LAN here a few months back for a specific purpose, but I'm not running it often and there may well be better options...

Update: I should clarify that ICE doesn't just find files, but builds a comprehensive keyword index (subject to configuration options) which is necessary in my case (a large consulting firm) as there are literally hundreds of similar resumes, proposals and associated documents, many almost alike... otherwise I think elwarren gets the prize for simplest solution!