http://bugs.winehq.org/show_bug.cgi?id=9913
--- Comment #9 from Joey Chan ttdlx1989@yahoo.com 2008-02-04 17:50:55 --- Not likely. I don't believe DirectX is tied into the locale system.
In terms of fonts, I already set it up to use Japanese locales. (LANG=ja_JP.sjis wine <executable>)