just run it at windows xp sp2 compatibility mode AND as administrator - then it works.
So you're running Windows 7. (until you mentioned running in XP2 compatibility mode we had no clue how to begin to help you)
And you didn't leave ANY hints about what the "screenresolution thingy" you mention might be.
So let's see if we can guess what your NEXT question will be!
Ahhh...
I can see your situation nooooowwwwww...
The answer is: You left your car keys in your OTHER leather jacket!