i want to buy vista premium home. its not available in india as its not launched. i tried to download it from circuit city but it says it want usa address !!now two points i want to ask you guys is that the upgrade versions which are available at cheap rate requires a real purchased version of an old windows(xp or 2000 or 98)?If old versions are not genuine will vista home premium upgrade work?it says that if I have 98 or xp prof then I need to clean whole HDD and then install that upgrade version hence, I am bit confused.also whats the OEM status of the same !! Has any one bought the vista genuine?please post your comments !