Mitsubishi WS-55315 55" Rear Projection HDTV-Ready Television "1024x768 60hz display" Questions

...this but regardles of the resolution i choose i loose lots of the screen, much of it is viewable, but not all. Can this be fixed? normal desktop settings for a laptop to tv is 1024x768 60hz

...1024x768, 720x1280 (EIA standard) all at 60Hz are known to work but other modes might not. If you are using a PC to the HDMI port, it will not work. The only HDMI ports that can connect to a computer ...