I want to be able to record one channel while watching another one on the same tv. I just got the converter and do not have an anteena. At Comcast, they keep pushing a DVR. I don't really want to this added expense. Someone did suggest a vcr with a digital tuner. Will this work, if not what can I do to be able to do this? I have read multiple things from another converter (which comcast said will not work) to two vcrs. What can I do to watch one channel and record another at the same time?