http://bugs.winehq.org/show_bug.cgi?id=16325
--- Comment #90 from Dmitry Timoshkov dmitry@codeweavers.com 2009-05-29 23:56:38 --- (In reply to comment #89)
A part of the workaround, I think that any Windows program should be able to show well Unicode characters (and not only through the settings of the current locale). Or is the problem on the base, i.e Wine doesn't support Unicode at all?
Wine does support unicode, and one of the steps you listed (1 or 2) is required (it's not different from Windows in that regard) to properly display appropriate character set, along with fonts with required glyphs.