I made it one step further. Their tech support sucks. I found out from Instant Servers (maker of Miniportal) that I had to add default file types (index.cgi index.pl index.php index.xhtml) to the global settings. I guess this adds a line to the httpd.config file.
Now I can install FormMaker, and generate forms, but it will not process them. When I test a form, it looks for a directory that does not exist and I get "The page cannot be found" eror. The directory it looks for is:
http://www.***.com/php/users/formprocessorpro.php
I even tried to create this directory and it still does not work. The "users/formprocessorpro.php" portion of the address is actually installed in the installation directory of Form Maker Pro.
I am still waiting for a reply to my last three e-mails to MitriDat.