Reading some stuuf on another forum and am a little confused. In BIOS under SATA RAID/AHCI Mode there are three choices: Disabled RAID AHCI Mine is disbled by default. Does this mean since this is disabled my drives are running as IDE? From the way I read it you're suppose to set it to AHCI and then install Vista but maybe I misunderstood. Vista Ultimate 64 Gigabyte P35-DS4 rev2 RaptorX 150GB main drive. I also have another WD 250GB sata drive and a lite-on sata dvd drive.