So someone tell me if this is illegal or not before I get myself in trouble. I have a little bit older computer that had it's operating system taken out of it or something like that. It used to have Windows XP on it. I have a newer laptop that came with backup CD's and one of them is the Windows Vista operating system. Being as my older computer doesn't have an OS I want to use this CD to give it one. Is that legal or do I really have to go spend hundreds of dollars to buy something I already have? I mean, it makes sense that both computers belong to me and so does the disc so it would just be illogical that it is illegal, but I don't know. Maybe it has to be licensed or something like that.