Raid help for an old member - Come on in!

[XPerties]

Well after install vista on my p4 3.0 I laughed and started collecting new hardware for my new machine. I'd like to get the best performance out of it. Believe it or not I've never setup a raid but before I begin my questions here is the hardware I have ready to put together:

- Intel Duo Core 2 e6600 cooled by Sunbeam Tuniq Tower 120

- Asus p4B Premium Vista Edition

- 4 gigs of Corsair TWIN2X2048-6400C4 DDR2-800 XMS2-6400 Xtreme Performance Memory

- 2 Western Digital Raptor WD1500AHFD 150GB Serial ATA 10,000RPM Hard Drive w/16MB Buffer

- BFG GeForce 8800 GTS OC 320MB GDDR3 PCI-Express Video Card

- Powered by Thermaltake W0117RU Toughpower 750W Power Supply w/Active PFC

I'd like to set the 2 drives up to perform the best they can so my few questions are:

[1] Which raid would you recommend?

[2] While installing vista does it ask you if you want o setup raid or is there a trick in doing this with vista?

BTW I own the Vista Ultimate Upgrade and since this is a new system I guess I'll need to install vista 2 times or XP pro then vista.

The new features in IPB are fun aren't they? weeeeeeee