I have just bought the 42PF9966 and trying to connect it to a varity of devices. I have tested it with Cable TV, DVD with component input, XBOX with component input. The picture quality is great with all these but when I try to connect it with PC via DVI (it comes with a HDMI->DVI cable), I was puzzled ! I have set my PC resolution to 1024x768, 32 bit color and 60Hz, the image go straightly to the Plasma with impressive clarity. But then I noticed that the whole screen seems scrolling horizontally (sometimes left, sometimes right), 1 or 2 pixel at a time for every 5 to 10 seconds. I have to use the remote to re-align the picture every minute and this really annoyed me. Is there anyone experienced this kind of problem before, I have tried two PC with two different display cards, AT9800Pro and GeForce 5700 but it seems there is nothing to do with the display. I am also confused with the TV's manual stating that 1024x768 is not supported by 42PF9966. I have tried 800x600 the problem persists. Any idea or advice ??