I have kind of a problem here. I'm using Viewsonic VA902b 19" LCD monitor. The suggested resolution by the manufacturer is 1280x1024, however, when I set my resolution in Windows XP to match that, there is slight horizontal flickering/distortion going on. I've tried a different monitor - IBM CRT 15" montior, and set the resolution to 1280x1024 and there is NO flickering/distortion going on, therefore I don't think it's a video card.
Now the monitor works fine at 1024x768 resolution, but as soon as I switch it back to 1280x1024 the flickering/distortion starts.
My adapter settings are at 60Hz, and all cables are connected tightly.
This is what my monitor displays in settings: