WinME, PHP 4.2.1 and PWS problem

I have installed 4.2.1 and get an 500 Error when trying to view in IE browser. I have done the following steps: 1. Copied DLLS to Windows dir. Moved the PHP4TS.DLL to the Windows and checked that the MSVCRT.DLL is already there. 2. Copied the php.ini-dist to the Windows dir and renamed it to php.ini. Set the doc_root to = "c:\Inetpub\webpub". Other changes to the php.ini are as follows: extension_dir = "c:\PHP\extensions" session.save_handler = "C:\WINDOWS\TEMP" session.save_path = "C:\WINDOWS\TEMP" register_globals = Off magic_quotes_gpc = On Clicked on the PWS-php4isapi file and message came back that changes had been made. I guess this is to reflect where the location of the php-4isapi.dll. In the PWS Manager, I made sure the execute check box is checked. I have done this for all directories. I believe that the browser defaults to the Inetpub\webpub directory to open files. I would appreciate any suggestions. Thanks in advance. Cheryl McCann