PWS and PHP4

I installed PHP 4 on an NT Workstation 4 running PWS 4 build 1381 and made the change in the registry for the script map, yet my pages don't get processed. I originally tried to use the isapi dll but have since switched to php.exe and have the script map as such. php.ini is in /winnt Any recomendations on why PWS doesn't process the page? I don't know of much I can do to track what is actually occuring. If it is worth noting, ASP and ColdFusion works ok but I didn't see either in the script map section of the reg. Regards John Parrish