Win2K IIS 5 CGI Behavior Error on simple page.

Arghh.. I appreciate help from anyone on this one. I have a new install of PHP4.5 on my IIS 5 machine with Windows 2K. The install went fine.. When I go into a command prompt and type c:\php\php.exe -i I get the HTML junk, which is good. But... When I try and send a simple test page with a PHP version information tag in it, I get the good old "CGI The specified CGI application misbehaved by not returning a complete set of HTTP headers. The headers it did return are: <Blank Area> Now I have seen this error before. I have verified permissions on the relevant files.. Heck, I even set the web site to have administrator privileges just to test the possibility of some erroneous permission error.. Same problem. The "Check that file exists" is checked in the IIS setting, so that is cool. In my php.ini file, the only item I really changed from default was "extension_dir =c:\php" Is there something else in the PHP.ini file that I am missing??? Remember.. This page I am trying to test is simply: <body> Hello <?php phpinfo(); ?> </body> Please Help :) Ed