Forum Moderators: phranque
You can get all of the detailed information on installing PHP with Apache in this thread titled Installing a new web server: Apache2, PHP5, MySQL4 and PHPmyAdmin [webmasterworld.com] taken from the PHP Forum's Library [webmasterworld.com].
You should also be able to test the configuration of Apache and get any error messages returned. They will aid in finding your problem.
Good luck with everything! :)