Also, since your running apache 2.0, try this.
I looked at a default install of a fedora box that I did, and it's using the apache 2.0 stuff. The lines for php aren't in the httpd.conf file, but rather, in the php.conf in the conf.d folder.
/etc/httpd/conf.d/php.conf
I looked in that folder and vi'd php.conf. Here's what I have in that file.