Hi all. I am currently a Directv customer. My contract is up in about 6 wks and I am thinking of switching over to cable. My questions is: I currently have an HD DVR from Directv with a 1Tb external Hard Drive attached. If I switched to an HD DVR from the cable company, would I be able to simple "plug and play" my hard drive on the new DVR? Any info is appreciated. Thanks!!