OK here is what I want to do after I install my new Vista OS.\n\nI want to clone my HDD for backup, to another HDD. I am thinking of using a USB external HDD to do this. I want this drive to be bootable,so if my HDD goes bad all I have to do is exchange the drives. You think this would be possible due to activation ETS. Also thinking that my system should be upgraded as muchas possible, that is as much as I can afford before I do this.