FYI, I've partially solved my problem. Before if I pushed play on the VCR, the TV would turn on, but I was getting only a blank screen. Turns out I also had the S-Video jack plugged in to hook up a camcorder; when I unplugged that cable, the regular VCR signal came through fine...

One more question though. Currently, the TV only comes on automatically when I press PLAY on the VCR. Is there any way to get the TV to come on when the VCR is powered on (without playing a tape)? I sometimes like to watch the TV through the VCR tuner, since the VCR has a nifty programming Guide built in to it.