Howtoforge posted a tutorial showing how you can install an Apache2 webserver on a CentOS 6.0 server with PHP5 support (mod_php) and MySQL support.
LAMP is short for Linux, Apache, MySQL, PHP. This tutorial shows how you can install an Apache2 webserver on a CentOS 6.0 server with PHP5 support (mod_php) and MySQL support.Installing Apache2 With PHP5 And MySQL Support On CentOS 6.0 (LAMP)
I do not issue any guarantee that this will work for you!