Hopefully this qill put you back on the right tracks, with your default hdd that has xp on it make that Raid 1
Take you other DVD-RW drive and put it on raid 3, forgive me if thats wrong, but I dont have a picture to go by with your mobo.
Next, look at your bios IDE and raid configuration setup,if it ask you which mode you want, raid achi or ide...
Tell it you want ACHI mode and save your settings, let it do a normal restart, if your windows boot logo comes up great!
If not it will show you which partition you want to select, windows or linux ?
Let us know what happens later on.