xwater

hey everyone. so yeah, i have vista right now, and i gotta say, im not liking it. i have the cd key for windows xp MCE sp2 2005 on the side of my computer. but i dont have the disc. i tried to get one, but the ones i get wont recgonize my sata harddrive. does anyone know how to get xp back on my sata hard drive? any help would be extreemly appreacited.