I have a new TivoHD, Sony 46XBR4, and 2 new cable cards from comcast (this is my first move into HD). Everything was pretty painless. LCD arrived on Monday, picked up the Tivo yesterday, walked into the local Comcast office and they gave me two single stream CC's. Hooked things up and called Comcast to have them activated. They did so and it all "seems" to work. I can see the HD channels and reran guided setup (after one false start) and it works. Now my question - for our local affiliates (CBS, NBC, ABC, and Fox) all of them show in the Tivo guide show what they are sending their signals out as (1080i or 720p). Fine. But I only get HD on some of them. The rest of them show up as boxed (lines on the right and left). Other things: I am connected via component input, not HDMI yet (I just used the component cables that came with the Tivo) - I believe that this doesn't matter. The LCD says 480i SD when I do a display (even though it clearly will show HD). CSI NY (CBS) last night in full HD, widescreen, while the other stations were all in the boxed mode. When the news came on our local NBC news station was widescreen and the others were boxed (including CBS). All of them claim to be broadcasting HD. If for some reason, I'm not getting a good enough signal, does something downgrade to 480 mode? Or is it the case that a digital signal sent out at 1080i is either there or not? Is this an issue with the TIVO or with the LCD? I looked at the Sony manual and I don't see anything where I can muck with upscaling or anything else related to the type of signal that it sees. The only adjustment is Wide mode (Wide Zoom, Normal, Full, and something else that I don't remember). Thanks gang. Bob. p.s. The Tivo hasn't updated itself to the latest software and I only saw pixelization issues maybe twice in an hour of watching. It was the kind of thing that I used to see with my digital STB, so it didn't bother me.