Not a OS issue, it's a video card issue, I am assuming it's a ATI , which seems to be problematic on some wide screens, try decreasing your resolution of your monitor and change the settings in CF to match , also modify the properties to include screen resolutions not supported by your graphics card.
Resolution properties ---> Advanced options --> Uncheck hide resolutions this monitor cannot display.
play around to get it right, I would try setting your screen resolution to 1024 X 768 (or the next one up depending on wide screen) and match CF to it.
if all else fails, try forcing the application to run 800 X 600 , set screen resolution to the same.
Hope this helps,