I haVE A Dimension XPS Gen 3 with A03 bios. XP was loaded on a SATA 0 drive with COMBINATION set in BIOS. Nothing is in SATA 1 position. I have a SATA DVD writer in SATA 3 position with nothing in SATA 4 position. My BIOS has SATA 0 and SATA 1 (empty) as a RAID 0, and SATA 3 and 4 (empty) as a RAID 1. How do I separate the RAID ones into two SATAs so I can put a second NON-RAID in position 4. COntrol I does not seem to do anything an the BIOS setup shows no DISK CONTROLLER that I can change. What is going on? HELP!