this ones nice and easy
1) goto apache_dir/conf/httpd.conf
2) find this line: AddType application/x-httpd-php .php
3) Add all the extensions you want recognized as PHP files and type them in (separate by a space)
The line should look sumthing like this:
AddType application/x-httpd-php .php .php3 .html .htm
4) restart apache and all the files with the extensions you included will now b recognized as PHP documents.
Hope that helps
- Matt