Go to Windows Explorer -> Tools -> Options -> View -> Hidden Files and Folders. Select display or hide.
Different Windows versions (9x, NT, 2K, XP) might be slightly different but you should be able to find the solution under Tools -> Options.
HTH.
Different Windows versions (9x, NT, 2K, XP) might be slightly different but you should be able to find the solution under Tools -> Options.
HTH.