Display Problem with PelicanHPC v1.8 64bit

Hi all,
I'm currently trying to get PelicanHPC working on an Intel Xeon based machine. I'm using the standard iso from the downloads page but am running into a problem duing booting. Every time the xserver tries to start, the PC reboots. I have an ATi FireGL 7350 graphics card.

I have tried using different cheatcodes to change the xmodule being used by the xserver, but all seem to cause the same problem. I think the problem is with X because I'm able to get to a command interface, and it's only when i try to start X that the PC reboots.

I have also tried a Debian 5.0.0 live CD to see if I could figure out what to do. The Debian 5.0.0 boot up process runs to the point where X is starting, and then the screen goes blank, no matter what xmodule I tell it to use. It doesn't cause the PC to reboot though.

Any ideas on what could be causing these problems, is the graphics card compatible with the standard ati driver?

Thanks,
Seán