Raid 0 for windows xp

I am building a AMD Athlon FX X2 4800 System with SLi (dual ge-force 7800GT Video cards) and 2 SATA raptor x 10,000 rpm Hard drives. I am thinking of building making the system a raid 0 system for maximum performance. I will be using the win xp pro 64 edition. It this possible? My second question is I also want a third SATA drive for storage only not to be part of the Raid set up? I know that this will take up some pretty surious power so I have added a 650 watt power supply. Would that be enough power to run the system and support my Idea? I can trully appreciate some sound advice on these issues. Thanx alot, B1aze (the game b1azer)