I am putting together a home desktop, its main function will likely be gaming, though it will do other tasks besides this.<BR><BR>I had considered buying a SCSI RAID card, then hooking it up to two ...

Just let the OS do its thing, provided the drive is set to the right mode. If you had an old system where it was set to IDE/PATA and the new one is AHCI, that's the only complication. (That's fixable, ...