I am so sorry I wasn't specific enough! Two different hard drives, One SATA (XP), One UIDE (Win 7). IDE takes over and doesn't allow SATA to boot. I need to manually write in the dual boot in Win 7 or unplug the UIDE to boot into the xp, at which point the win7 drive is not plugged in and therefore, is not showing up on the xp.
I'm going to run off to Asus and see if there is a bios update I missed that will allow both drives access at the same time. I have the Win 7 drive jumperd as a slave, but the mobo makes the ide channel the "boss" and the SATA isn't allowed on the boot sequence. Arrgh!