Huh

Since the drive is invisible to both the motherboard and a new SATA card, despite the fact that it's powering up, it seems to me like it's a drive problem. You can RMA it to them using the RMA form on their web site
here.
Unless it's the 10000rpm Raptor that only comes in SATA, however, you may want to RMA the drive back to where you bought it instead, tell them it's faulty, and ask if you can get the credit towards a standard PATA version of the same drive instead of another SATA one. Unless you really really want SATA, of course
