Last hour, I tried hooking my TV's (not TV tuner) SD cable box to my TV tuner (which is an HD TV tuner), I got a scrambled video picture... but great sound.
lol, don't kill me, I knew it wouldn't work 
Thats weird.. you're using an SD box and it can tune to the HD channel? Usually on the boxes it just does audio only and doesn't try to decode the video. The scrambled video I suspect is the box trying to decode it but the processor in the box just can't keep up so it keeps dropping.
Thank you for your insight on that, I didn't think about that. The cable box I used for that (which is for my TV... I have a separate, smaller one that can't tune to TWC HD for my desktop tuner), is a brand new one I got just a month before the cable went digital here in Lansing. That could be part of it, but I'm not sure. I am supposed to get an HD box with the HD starter bundle we apparently have, which I am hoping to pick up tomorrow.
Like I said, we do have the HD starter bundle, which obviously includes TWC HD in the package. We inadvertently got this when my mom talked down the bill and got us a promotional price. This may be partially why I am able to at least hear the channel's audio.
