PHP install/config for IIS 6/Server '03

Hi all, thanks for reading.
I'm trying to install PHP 4.3.9 on Server '03 running IIS 6 and am encountering problems.
Currently, I have the php4ts.dll sitting the windows system folder and the php.ini file sitting in the window folder. In the ini file, I only have the MS SQL extension on, and have that sitting in the system folder as well. The php.exe file is set for the IUSR read & execute permissions.
In IIS, I have a .php entry in the Mappings tab of the Home Directory/Configuration pointing to php4ts.dll. I also have a web service extension .php requiring the php.exe file and the php4ts.dll file. Also in the "Home Directory" tab, Execute Permissions are set to Scripts and Executables.
I have it as such because I installed PHP 4.x on a previous '03 server and, although it took me a couple of days, I got it to work, so I copied the configuration as well as I could, although I unfortunately didn't write it down.
So here's the error message:
"The specified procedure could not be found."
No procedure specified though. I just assume it's referring to PHP in general. All I'm trying to do is run phpinfo().

Any ideas? I'd really appreciate any help.

Thanks in advance.

-colin