What fsb are you trying, I read the DX38BT doesn't OC well.
What OS' have you had on those HDs and could their boot sector be the problem. I take it your opting for RAID and loaded the drivers for the chipset.
Oh, and have you switched the BIOS to boot from your selected HD after the xp files have been copied, rather than the cd/dvd? (sorry if that's an insult)
There's a whole world of DX38BT Bonetrail info available that I suspect you need to search