As a Directv customer for over a year, I recently decided to upgrade to a DVR receiver. I installed the receiver the other night but now realize that because I have only one input into my receiver, I can't record one channel and watch another (or record two channels at the same time). I have a round dish with only one lnb and this may be the problem. I unhooked the input and hooked it into a splitter (one that was lying around the house) so that I could get two signals going into the receiver. This seemed to work. However, when I tried to record on one channel and watch another, I was only allowed to watch certain channels. And some of the time, the DVR would only record a program if I was surfing certain other channels. Do I need a different splitter? Any other advice?