charset problem of mailcap

[haomiao]

Hi
       I am using emacs23.1.1 in WinXp and I want to view the MIME
part externally with ms word.

       So I edit the .mailcap like this

            application/msword;cmd /c WINWORD.EXE %s

       My coding charset is chinese-gb18030. When I open a mail
attachment in gnus whose file name has Chinese
character,  winword report error, and the filename which passed to
winword is chaos. But the temp file name in
the Local Settings\Temp directory is correct.

       It seem that  emacs or gnus give the command line with wrong
encoding. How can I resolve this problem ?