wxLocalisator Help

If you can read this from within an application, you can propably specify additional locales by yourself.

Modify the file locale/locale.htm or locale/locale.ini, just copy a section and fill in your new locale.

You will have to translate the message texts too.
This is done in a comfortable way with the program "poEdit" by (...)

You should read the internationalisation section in the wxWindows manual, too.