I am sorry this is going to sound like a noob question I have used the activation tecniques for Vista a few times with the certification files. Is there a similar method for XP. I have xp pro on a asus mobo with modded bios that has slic 2.0 installed in the bios for asus and works fine vista. Can I just use a matching VLK for the asus or what whould be the best method for activation? I didn't see any certification files for xp just the oem key that matches?