|How were the SATA drivers integrated? What program did you use and have you successfully installed WinXP on a SATA drive using that disk?|
As far as ANY settings in the BIOS go, they have absolutely NOTHING to do with what OS is installed on any hard drive.
Did you get the chipset drivers from the link below and slipstream them into your WinXP files. Also, why didn't you stipstream SP3 at that time?