Hmm..
what video card you using? and are the video drivers up to date?
i would also try make sure direct-x is upto date aswel
sorry im not a expert at this kinda stuff but hate to see someone witha problem, had to at least try and help lol
you could post the screenshot and explain on another forum, you know like an experts one. just google and should come up with a few
there bound to be more help than me