im building a new pc and i have all new parts except the hdd. i planed on using my old hdd it has vista on it and i purchesed a copy of windows 7 with all the new parts. what im wondering is how i go about using the old hard drive as the main drive for the new build due to the fact i dont have the money to spend on the inflated and outrageous prices of internal hdd's right now. do i just throw it into the new build and boot up with the windows 7 disk or should i wipe it using the old computer before i put it in the new pc. i dont care about the data on the hdd i want to start fresh anyway.