OK, so I just got digital cable and since I had to reconnect things anyway, I figured I would finally set up the receiver to do all the switching for me. But... after connecting the vcr, I have sound but no picture. What is the proper way to hook the vcr up? Right now I am running composite from cable box to receiver (TV input). Then composite from vcr out to vcr in on receiver, and vcr out on receiver to vcr in. I also have the dvd player running composite video to receiver, then only the composite video out on receiver to the tv. What am I doing wrong?