I'm a newbie to this whole process but I'll try to explain my problem as best I can. I just recently purchased a brand new Zenith E44W46LCD HDTV. The picture quality in the store was outstanding. I understand it was HD and the picture in SD would be worse. Got it home. Hooked it up to my SD Digital Comcast box and Tivo. Picture quality was very grainy and pixelated. Similiar to when you blow Windows Media Player up to the full screen on your computer and it's meant to be viewed at the regular size. Watching anything but sports is below average and sports are completely unwatchable. Especially on the wide shots. My 37" 10 year old CRT has a better picture. The digital cable channels are not much better than the analog ones. So thats not the problem. My wiring is a such. 25' coax (medium grade Acoustic Research cables) from wall into splitter. One splitter into cable box. One into Ant. on TV. It's not the splitter because the coax directly into the Ant. is just as bad. Monster Composite cable from box to Tivo. Monster S-Video from Tivo to TV. The DVD is a Monster Component cable that has a above average picture. I also have a 30" Dell LCD flatscreen that doesn't have the greatest picture with my cable but is better than the Zenith. I do notice when I go PiP the little PiP looks outstanding. Very sharp. I've tried adjusting the sharpness, contrast, etc. with no effect. The picture just doesn't look in focus. Any ideas or is the SD signal just that bad? I can't imagine anyone with buy these TV's given the poor picture in SD vs HD because of the limited HD programing. I have a feeling its the signal due to the fact the Tivo menu screens and DVD look above average. Any ideas? Thanks!