Configuration problem:PHP4 on Apache

HI, I got problem with installing PHP4 on apache, it is not able to serve the PHP pages...here r the lines which we added to the apache configuration files..... At start up it is not giving any problem,nor it is giving any errors.... Here r the lines which i added..... 1. LoadModule php4_module modules/libphp4.so //in loading module section... 2. AddModule mod_php4.c //in Adding module section 3.AddType application/x-httpd-php .php4 .php3 .phtml .php //In AddType section..... AddType application/x-httpd-php-source .phps The Installed rpm on the mechine....... apacheconf-0.7-2 apache-devel-1.3.19-5 apache-1.3.19-5 php-4.0.4pl1-9 php-imap-4.0.4pl1-9 php-mysql-4.0.4pl1-9 php-ldap-4.0.4pl1-9 php-manual-4.0.4pl1-9 php-devel-4.0.4pl1-9 Thanks, Sunil.