MSI K7N2 Delta-ILSR (MS-6570-030) Motherboard "xp 320 harddrive" Questions

...320 gig drives with the intention of replacing the IDE Drives in my current machine & reinstalling my XP operating system. Disconnected both hard drives connected one Sata drive to the SER1 interface ...

...320 GB Western Digital SATA drive and an old 60 GB IDE drive. I have the settings in my BIOS to boot from the SATA drive but sometimes it will boot from the IDE drive. I've had this happen before as ...