If you manage shared computers in a large organization or for users with different language needs, you might want to provide programs in multiple languages. Windows XP and Windows Vista both provide the necessary technology for a global user experience.
The Windows XP Multilingual User Interface (MUI) Pack is a set of language-specific resource files that you can add to the English language version of Windows XP Professional. By using MUI, your users can change the interface language of the operating system to any of 33 supported languages. The MUI is sold only through Microsoft Volume Licensing programs such as the Microsoft Open License Program (MOLP/Open), Select, and Enterprise Agreement.
Windows Vista is language-neutral, and all language and locale resources are added by means of language files. For a full translation, use the Windows Vista Multilingual User Interface Pack (MUI). For a free, partial translation, use the Windows Vista Language Interface Pack (LIP).