Hi,
Similar question has been discussed before:
http://www.winehq.org/pipermail/wine-devel/2006-November/052140.html http://www.winehq.org/pipermail/wine-devel/2006-November/052142.html http://www.winehq.org/pipermail/wine-devel/2006-November/052143.html
You only need to add an English resource; the other language files are made
by
whoever translates the English strings into their language.
The better way is to add string untranslated into every resource, otherwise it will not be loaded.
More info at http://www.winehq.org/pipermail/wine-devel/2006-November/052135.html
-- Kirill