I have an ASUS motherboard with promise fasttrack 378 sata controller. I have two hard drives and my plan was to use one for windowsXP (done and working) and the other for Redhat. When I try to install and I get to the partition screen, it doesn't detect my harddrives and aborts the installation. I know there is alot of info about Linux and Promise being hard to configure, and what people did to get it to work, but the ones I've read are too technical for me to follow. I have downloaded Linux Promise controller from ASUS' website, but don't have the slightest idea of how to install it before installing the Redhat.

Ok, this is a problem that is definately fixable. Let me start by asking, what version of redhat are you trying to install?
If I may recommend something, try Fedora Core 4 - It's all the redhat you've come to love, but more modern.

I am trying to install redhat linux 8.0. What is fedoracore4?