My uncle loaned me a windows vista home premium dvd with the product key. I also have a product key on the bottom of my laptop for the same o/s. I was wondering if I could burn a copy of the dvd onto a blank dvd that I have and if I did would I need the product key that came with the dvd or can I use the one on the bottom of my laptop or both... He said I could make a copy if I wanted to.