Some RAID notes:
Set it up before install the OS.
I set it up so the OS installs on a stripe volume.
ICHR7 / Intel Manager will take up to 4 drives. Not all of them need to be RAIDED. Install them in this order:
SATA1, 3, 4 and EZRAID_1 These map to Port 0,1,2, and 3
In the BIOS...