I just phoned MS to get an activation key for XP on my rebuilt PC - and they won't give me one. As I have replaced the mobo with a different model they say that it invalidates the use of my OEM XP Pro version and that I'll have to buy a new OS. They say if I need to transfer XP across to a new machine I need the Retail version. Hah! Amazon prices: Retail XP Pro (SP2) 250.00 UKP OEM XP Pro (SP2) 77.00 UKP Mutter, mutter.. John Woodside bones@xxxxxxx http://woodair.net