For me, changing fileencoding (++ enc =) works fine in gVim on Ubuntu Linux, but on Windows 7 it doesn't (does everything turn into characters?). But I found that even without changing fileencoding (ucs-bom by default), I could display Japanese characters just by changing guifont:
set guifont=MS_Gothic:h9:cSHIFTJIS
However, entering Japanese characters still doesn't work (using Microsoft IME to enter Japanese characters?).
Just for comparison, on Linux my guifont is simple:
guifont=Monospace 10
Both the display and the input (with IBus Anthy IME) work fine.
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