Ok so I see that CFS3 will run no problems with either XP 64 bit or Vista 64 bit. So that's sorted. I like the idea of a dual boot system though. I think what I might do is end up keeping my system as it stands now:
Antec P180 Case
Asus A8n Sli Deluxe mobo
Asus 7800 GTX Running in Sli
2 Gig RAM
Soundblaster Audigy 2
And use it for CFS3. If I was to buy a new computer, well there isn't a lot of price difference if I also buy another keyboard, mouse and speakers. Then I have two complete systems. Then I won't have to worry about CFS3 not running and can concentrate on getting a system that is for running todays games and programs. So with that said, are there any drawbacks with Vista at all?