That doesn't seem to work for my setup...after making that change URLs like this:

http://localhost/cgi-bin/app_name.cgi/run_mode_name?params=values

Still give me 404 errors. Although, with the change, this address works: http://localhost/cgi-bin/app_name.cgi/?params=values

while before only this worked.

http://localhost/cgi-bin/app_name.cgi?params=values

Is there a name for how I'm parsing the URL here?

Also, and potentially of note, I know that on Apache mediawiki software allows you to create urls like

http://en.wikipedia.org/wiki/Perl or http://localhost/wiki.php/Perl

But on their installation page, it says this isn't possible on IIS. Is this the case for perl too? If so, then its not true CGI::Application can "run equally well on NT/IIS or any other CGI-compatible environment."