Hey all...new guy here looking for some advice on a problem I can't seem to solve on my own. This past Saturday I became the owner of a Panasonic PT-53WX52 HDTV. I spent plenty of time getting all of my equipment set up and hooked up properly, but I ran into a snag when it came to hooking up my cable box. The cable box is a Scientific Atlanta 3100HD. I do not have the manual for this box at this time--I need to disconnect the box to get the serial number from underneath it and then I'll be able to download the manual (cramped entertainment center and short cables prevent me from lifting the box up). I only mention this because I don't know if there are settings in the box that are causing my problem. Anyways, I hooked up the cable box to the TV using the "Component 1" input (RGB cables for video and RCA cables for audio). The problem I'm having is that I can't change the aspect ratio when the video source on the TV is set to "Component 1". The picture comes in as 4:3 format with the bars on the sides, but I can't change the aspect to full or zoom or just. I ran a coaxial cable from the box to the TV and that allows me to use the zoom features, but the picture stinks (crappy coax cable, most likely). What do I need to do to get the zoom functions when using "Component 1" as a video source? Do I need to use an S-video cable instead? Is the S-video cable better quality than the component cable? Do I need to adjust some settings in the cable box (I couldn't find any using the remote, but maybe there's some sort of "service mode" I can use)? Basically, I need to know why I can zoom the picture with the other video inputs (antenna, video 1, video 2, etc), but I can't zoom it with component 1. I can't watch my cable in 4:3 mode because I don't want to burn the screen, but I can't take much more of watching cable using the coax connection because the picture is *terrible*. Anyone have any suggestions? Thanks in advance, Jeff L.