[Wine] Multilingual application on Mac OS X

[SunLight]

I have installed wine package from http://thisismyinter.net/?p=29 on Mac OS X v10.5 Leopard. It works, except this http://www.thediction.com/ program don't accept Bulgarian input.
I have successfully use it on Linux with "LANG=bg_BG.CP1251 wine Diction.exe", when that locale is installed. I don't know how to achieve this on Mac. "LANG=bg_BG.UTF8 wine Diction.exe" dos not work, either CrossOver-6.2.1-demo.

Thanks!