eth00 has put a great tutorial together :
This guide was designed for PSFservers using centos 3.4 but it will work fine for just about any server install of centos or RHEL.
This guide is going to be using a text mode install simply because it is the most compatible. Note that in doing so the mouse is not going to work! Simply use the tab and arrow keys to move. The install itself is pretty simple but if you have any problems please email me or post them below.
read the step by step article here eth0.us