behaving CGI message

Installed PHP with no problem and did some preliminary testing. Installed phpMyAdmin and got that running also. Tighted down permissions and somewhere along the way starting getting the CGI misbehaving error message. Slowly backed things out to the point that Everybody has Full Control on machine. Still getting the error message. Fiddled around for a while and finally went through entire install procedure again. php -i works fine, but still get cgi error. To try to get some feedback, I set up a perl script to exec PHP. It does not appear to be a permissions problem, b/c the following commands in the perl script work fine print php -i; print php d:\\inetpub\\cgi-bin\\test.php; But accessing the php script directly http://koz/cgi-bin/test.php still gives me the cgi error. I have tried different things in the test.php - simple html message - <?php phpinfo(); ?> Same result. If I remove the App Mapping I get the contents of test.php in the browser with no problem. I have tried every suggestion that I could find. I've read the FAQs, been through the mail archive, including those which say to read the install.txt, which I've done about 10 times. I've done the manual install (twice from scratch) on IIS 4.0 on NT SP6a. No extensions loaded. I have no clue what else to try. Any suggestions would be greatly appreciated.