So I have Vista on 2 drives now, and I want to install XP on 1 of them.
 

I need to format a drive and install XP on it, Vista RC1 is fucking up on me with some software.

whats the best way to format a drive you're not using, and how do I get windows vista to let me install XP or even let me boot from the xp cd after I did my format?

thanks guys

i don't think you can...
unless you unplug the vista drive, install XP on the other drive, plug in the Vista drive and manipulate the boot setting (as far as i know VISTA's boot is different then xp (no more boot.ini....)