CHANGE THE LANGUAGE IN WINDOW 7THE DISPLAY LANGUAGE IS THE LANGUAGE IN THE  THAT WINDOW USES IN THE WIZARD , BOXES AND MENUS AND OTHER ITEMS IN THE SYSTEMS . SOME DISPLAY LANGUAGES IN THE SYSTEM ARE DEFAULT INSTALLED, SOME ARE NOT. SO YOU HAVE TO INSTALL THEM. NOW HOW TO CHANGE THE LANGUAGE IN THE WINDOW 7 OS:-GO TO START BUTTON , OPEN REGIONAL LANGUAGE BUTTON .CLICK ON CONTROL PANEL .NOW...