pidgin can not display chinese character under vista

[Xinhua Ji]

Hi,
I downloaded pidgin 2.3.1 and installed on vista. Chinese characters in
contacts name can not be displayed (see attached screenshot). The
conversation window also can not display chinese until I uncheck
"preference/conversation/font/use font from theme" and choose a font
"simsun". However, this does not solve the contacts name problem.
I am running Vista Enterprise. The same package works well in XP.
I googled a lot and tried something like putting "gtk-font-name = "SimSun
12" " in .gtkrc-2.0 under %userprofile% directory, while it does affect
something but still not chinese characters.

Anyone can suggest where to look at this problem?
Thanks,
Xinhua Ji
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