http://bugs.winehq.org/show_bug.cgi?id=16325
--- Comment #92 from Paul "TBBle" Hampson Paul.Hampson@Pobox.com 2009-06-01 02:14:29 --- (In reply to comment #91)
Definitively I think that the problem lies in the missing glyphs in the default fonts. Even winfile.exe will not display unicode filenames correctly.
In that case, this is the wrong bug. Bug 13829 is about the lack of CJK glyphs in the Wine-provided fonts, and includes the instructions for working around this by pointing Wine at user-provided or distribution-provided fonts until someone either relicenses or creates a metric-compatible font for Wine to match the Windows CJK system fonts.
Please keep this bug just for FontAssociation issues, see comment 88 for what I understand to be the current situation and required work to solve it.