hi i am running vista home premium 64 bit and i would like to put windows 7 on . it is gonna be on a new hard drive since i'm getting one anyway. my question is after i have installed and formatted the new drive can i set in the bios to boot to that drive with the windows 7 dvd in the dvd drive? or something else. and when windows 7 goes to install i understand it will also by default name my new hard drive c .does this mean there will be 2 c drives or should i change the drive letter?