Thanks for your help. The siutuation seems to have
improved a little bit. Removing the ".pm" extension
resulted in my jumping to a Tripod default page that
said the URL I was trying to access does not exist.
I've tried submitting the corrected form using
both "post" and "get" methods; I get the same result
either way.

And regarding the hash-bang line, the host themself says
not to use it. I've tried including it anyway,
but it hasn't made a difference. Once more, thanks for
your help.