Getting a single SATA drive to act as boot device on A7V600-X board

I am trying to get a single Samsung SATA 120 GB drive to work as boot
drive for Windows XP on an A7V600-X board.

Thus far I have downloaded the latest VIA drivers for the RAID onboard
VT8237 Southbridge and updated the BIOS. With an IDE drive camped in
we got to see and partition the SATA drive and installed a copy of
Windows XP Home to it starting from the version running on the IDE.

After going nowhere tok the IDE drive out and went to re-install XP
including doing the F6 trick with the latest RAID drivers on a floppy.
XP sets up fine and the first partition of the drive is used OK.

After rebooting without the XP CD in we get stuck as there is no
bootable drive listed. Can't see a way to get the SATA drive on the
boot list. Tried SCSI option but it didn't fly.

Suggestions please for getting single SATA drive in non-RAID config
onto boot menu in BIOS ?

Phil