so i need some advice, ive got my new rig and my old rig. ive got a 160gb HDD in my old rig with all my stuff and what not. but i was thinking about selling my old one to buy new stuff for my new rig but who is going to buy it without a HDD? so i was thinking about buying just like a 80gb or so HDD for my old rig and using my HDD i have now for my new rig.. how can i get a copy of windows disk so i can install windows on a new HDD?