I've been searching and reading about Windows Vista, if it can be installed and activated on more than one computer. Apparently there are some types that does allow you to, how do you know if you have on of those types? I realize if you have two production keys, but mine is Windows Vista Business. And for example; it shows the production key, but under it, it has 8 more letters/numbers. So, would it be you filling those last 8 numbers in then? And then you can have it on two computers?