Thank you Silver-Fox and phishhead

Very grateful for your help guys....I kinda thought it would be that (relatively) simple, i just wasnt aware there was a OS choosing interface screen in XP during boot up if you have 2 OS's...
One more silly question...I've only built 3 computers myself, and one thing ive never had to setup or worry about is primary master drive and primary slave drive and secondary master, secondary slave when building a system. ive always just had one HDD, and the bios/cmos always just seems to choose that itself, default or whatever... (by the way, I know how to configure master/slave options with the jumpers on the drives, etc...)
anyway, how do i make sure both HDD's are configured as you pointed out; the SATA as primary master and the IDE as primary slave? is that an option in cmos ive just overlooked when setting a machine up?
Thanks again,
Zoso