ok so i bough a laptop wile back with windows vista and i just recived the dell windows 7 update disk since i was entitled to a free upgrade. the dell laptop had 2.1 slic table in bios so i just installed windows 7 ultimate with regular dell slp key. now i have the express dvd with a key they send me. is there a way i can install this on a different machine and activated. if yes: is there a way i can do a clean install with and activate with update key?