they will actualy give you a new key i aquired a disc from work still sealed in packaging but without the key,i gave it to a freind who rang ms and they gave him a new key damn they even registered it his name i realy wished i had kept it and done it myself but was worried about the consequences , well now he has a full copy of windows xp pro registered in his name.he just told them he had bought a computer and the key didnt come with it