Aha. I was sure there was a way to do it without faking out stupid browsers... there'd be hell to pay if ever anyone actually made a good, smart browser!

Now that I know what to look for, I was searching through cgi.pm, I found some code dealing with Content-Disposition, and looks like they've got it covered through the Attachment parameter:

print $query->header(-type=>'application/octet-stream',
                     -attachment=>'foo.doc');
[download]

Thanks!

--
I write the code while the master is away!