Vista Freezes before installation can begin

I started installing Vista RC1. After decompressing files, it goes to a black
screen where a green status bar loads. After a few seconds the status bar
freezes and it appearsa s though the computer locks up.

I tried booting in safe mode. It made it into installation but then said it
couldn't do it in safe mode. So I tried booting with the driver enforcement
disabled. That gave me a blue screen that I wasn't able to catch before
rebooting. I removed all the devices that were attached to the computer and
tried starting setup again. I got another blue screen, this time I cought
that it said it was a page_fault of some kind, but didn't get where. Finally,
I tried booting again, and this time, I got not blue screen, but instead the
system locked up again, but after the loading screen went away. The system
busy light is cought on too.

Not too sure what to make of any of it.

Any ideas?

My System:

AMD 2ghz (64bit) <--- I'm installing the x86 version of Vista though.
2gb RAM
256mb Nvidia videocard
600gb hard drive