Hi Larry, I think I need more information to tell you what's the problem.
What is the encoding of the source code files? Do you have installed the
support for East Asian languages on your machine?
If I had to guess, I'd say the source files were saved as ANSI and your
codepage is different from the one used by the developers of the
application. If this is the case, you can open a file with a different
encoding by selecting menu File, then Open, and you will notice that the
"Open" button in the Open dialog has a dropdown - click it and select "Open
with". Then select the option "<VB/CS> Editor with Encoding", then the
encoding that was used to save the source files (could be 936 or 950?).

Let me know how it goes
Aldo

FYI - the "International Settings" you mention below are only used to
select a different language for the VS Environment (menus, dialogs, etc),
if you have installed multiple languages of VS on the same machine. Nothing
to do with the localization of your application anyway

-- This posting is provided "AS IS" with no warranties, and confers no
rights.

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I hope you are talking about Chinese strings in resources, not in sources.
Translating strings hard-coded in cpp files is definitely something you
should never do.

Anyway, resources or sources, if the files are not Unicode (and is very
likely they are not), then you need to have the default system locales set to
Chinese (first you will have to find out if it is Chinese Traditional or
Simplified).
See here how to set the system locale (will ask for a reboot, and you will
have to do it):
http://www.mihai-nita.net/20050611a.shtml