PWS + PHP

Hi PHPals, Dunno whether it's really a PHP question; anyway your help is appreciated. I have a machine (Win98 SE) running PWS. Also installed is PHP. I want PHP to parse files with the .html / .htm (or any other) extension; i.e. when i try to view a file (index.htm for example) through a browser, PHP must parse that file. You may have guess, i have PHP codes in "index.htm" ... http://localhost/index.htm for example; where index.htm is in fact a file containing PHP codes. Where and how to I specify this? - In "pws.ini" ? Or somewhere else...? Registry ? - what should i put in the ini file / registry? Well i did it on IIS (Win2k) and it works ... but i need it on Win98SE Any help greatly appreciated. Thanks, Nadim Attari