toolic, Thanks for the explanation. I'm still very to to Perl (obviously), coming from a background in VB. Your explanation tells me why the script doesn't complain about an improper filetype.

As I mentioned to GrandFather, when I substituted his code into my script, it just creates a 500 error. I've been reading the perldoc for map, plus tutorials on PM and elsewhere. I'm at a loss. It works at the command line, but when I upload it to my host, it 500's.