To Change the Default Language

When the user logs in to the desktop from the login screen, the user session is run under the locale selected from the Language submenu of the Options menu. If the user does not select a language, the login server default language is used. You can control the value of the default language by setting the Dtlogin*language resource in Xconfig. For example:

Dtlogin*language: Ja_JP

Check your system documentation to determine the languages installed on your system.