I think you have to...
1. Copy php.ini-dist to \Windows directory, rename it with php.ini
2. Inside php.ini, find:
;cgi.force_redirect = 1
and replace with
cgi.force_redirect = 0
3. Copying php4ts.dll to your \Windows\System32 directory
I think it should work...
As I am not running Apache 2 Service for my httpd, I am not that sure either