HI, please help as I find this a bit confusing. I have a new system I built with a Sata II motherboard and have a couple of Sata II drives. Presently I am running XP64 but in Sata IDE mode. I would like to be able to use my drives to the full and I also want to install a partion with Windows 7. I do not want to run a RAID set of drives but I believe the RAID option may be the best. A friend recently bought a new Compaq system "off the shelf" with Vista pre installed and this was set in BIOS to RAID although it only has a single drive. Thanks in anticipation.