Please Help! Comcast hooked up my VCR to the TV and digital cable box. Although the TV and VCR are both working, I am unable to watch a tape. After depressing the TV/VCR button, I lose sound and the picture is snow. The VCR will play a tape, but the picture is not being transmitted to the TV screen. I am a bit of an idiot when it comes to electronics, so any info you can provide me on this issue is greatly appreciated!