So I bought a new lcd tv, it was hooked up with just the cable coaxial from the cable box. The picture quality was bad, so I tried s-video, it got a little bit better but still bad. So i tested a dvi to dvi cable with my laptop and it was perfectly clear. So my question is should I change in my comcast cable box for an hd box and use an hdmi cable? I dont want hd channels, I assume I can just use the box for hdmi and regular channels I already pay for though. I would take a picture of it, but it doesn't show up.