Cannot toggle fullscreen on Games

[uzapuca]

hi guys,
i used to play "Rise of Nations" with fullscreen as most games. Today i went for a quick battle and i check that is not fullscreen. I also see a WineSkin up menu which i am not sure why is there. It is a Mac game and i am not playing in it in a Windows Emulator. If i quit WineSkin the games quits too.

I tried pressing Cmd+Alt+A and i go to a full black screen. Cmd+h doesn't solve the problem either...maybe it is some software i installed which is causing the problem. I also tried to close session and enter again and everything keeps the same.

Maybe i did pressed some keyboard combination that locks the screen without noticing...

Any way to trash "safely" Lion preferences? Thanks for any help.

Cheers,
S