I know people are trying to help, but hmmm. He already said the drive was detected by the Promise controller and listed in post bios boot. The answer is that you need a driver that works in Windows 7 for your Promise Sata378 TX2 D0 controller. If you go to Asus's Motherboard site:

ASUSTeK Computer Inc. -Support- Drivers and Download P4P800-E Deluxe

and select the 2nd driver:

Promise SATA378 Driver V1.00.0.26 (ATA Mode)


Then make the disk, you can then just update your driver for the unknown raid device and point it to the win2003 folder on the disk. I haven't been able to find a newer driver than .26 unfortunately. The firmware on mine is .33 but this driver works just fine. Let me know if this helps.

Kevin