I do not believe that Sony's GW TVs are designed to be used with computers - at all. At least I tried for ages with PowerStrip on my KF-60XBR800, and was unable to get anything quite right. I could get it to display various resolutions (1024x768, 1920x1080), but none of them looked quite correct.

Perhaps with more time I could have found something that would work (PowerStrip kept creating settings that the GW wouldn't lock onto at all and was a real problem to fix), but in the end I had better luck using ATI's HDTV component adapter. Plug and play with that.