Unzip all the files from the zip file downloaded from php.net to say C:/PHP
Now look for these files
php4ts.dll
php4apache2.dll (usually on the sapi folder on the php zip file) -> for apache2
or
php4apache.dll --> for apache 1.3
now copy these files to the WINNT/System32
just to be sure i copied both of the dlls into the System32 directory. If you feel like experimenting just try copying the php4ts.dll.
then copy and rename the php.ini-dist to php.ini to C:/WINNT
then add the following lines to your httpd.conf
LoadModule php4_module C:\PHP\sapi\php4apache2.dll
AddType application/x-httpd-php .php .wphp
and add index.php to DirectoryIndex
if windows dont mess up in finding the right DLLs your done.
if you can email me your MSN id i can guide you through it. Dont post your id here though