Interesting thread. As Dezipaitor says Windows Vista offers multiple languages on a system, this is called MUI (Multilingual User Interface) by Microsoft. Windows 2000 and higher have special corporate MUI versions with the same functionality. This is used often in Terminal Server or Citrix environments where multiple users log on to the same system.
So it's important to determine the correct language for the user (and not the system!) and to foresee adjustment of the language during process execution. One approach could be to extract resource strings from microsoft
DLL's and EXE in which case you don't have to provide the translations. This might be a risk though as they could change in future Windows versions (this doesn't seem to happen often though).
Some Microsoft applications, like Office, also provide MUI. More info on MUI can be found here:
http://www.microsoft.com/globaldev/r...e/muizone.mspx and
here:
Application Compatibility in Windows MUI and perhaps the most important one here:
Writing Win32 Multilingual User Interface Applications.
Hope this helps!