1st port of call, is to find some documentation, on configuring php on Windows
or even Linux(obvious caveats apply- just supplement anything concerning linux for windozes).
Particularly, Apache's httpd.conf, and the windozes only php.ini files. Go to www.php.net for help. Check out every forum under the sun, and list your queries , the next thing is to compile any help, documents you can find. These will eventually enable you to configure your system.
Believe me it took me a long time, to get it working. Determination, research and research again.
Right then, take the line 'Load Module' mod_php4 out (it's not needed, well not there), keep the other two lines there.
what your find is that the four/five files on the C:/apache/php root. There are called these two 'php4ts.dll, php4ts.lib' should be copied to C/windows/system sub-directory.
try copying them one by one and testing until it recognises them. Don't cut them out of the php root directory, they should be copied to c:/windows/system/
check over the php.dist.ini, must be copied to c:/windows as php.ini.
Email me with any thing else, names is Legs
bye for now, happy configuring mate