SATA isn't for setting up raid (although you can). It's Serial ATA which provides additional data bandwidth over traditional ATA.
All you have to do is go into the BIOS and set the order in which you would like the drives read. You can set them in any order you please.
For instance, I have a 250 Gb SATA Boot drive, a SATA DVD-ROM drive, a SATA DVD Burner, a floppy drive, a 200 Gig IDE drive (Master) and a 160 Gig IDE Drive (Slave)
Boot order is:
floppy drive
250 Gb SATA drive
SATA DVD-ROM drive
SATA DVD Burner
Hard Drive priority is:
250 Gb SATA drive
200 Gig IDE drive
160 Gig IDE Drive
None of this is in a RAID configuration and the SATA drives are in SATA mode.