Who honestly would run PWS on their box, i meenh seriously. Run it for a week and you cant even load windows. I say stick with apache (it rocks). And installing it...
ScriptAlias /php-bin/ "c:/programs/php/"
AddType application/x-httpd-php .php
Action application/x-httpd-php "/php-bin/php.exe"
Yeah thats pretty easy, but i was stuck for a while. and dont forget to change the C:/programs/php thingy