UTF-8 character question

[horatio]

I downloaded Emacs 22.2.1 for Windows, and I was pleased to find that
Chinese characters work "out of the box" on my computer.  However, I
have a weird visualization problem for some characters.  One example
is 你你.  These two characters appear the same in Firefox, in Notepad,
in the file system (ie Explorer), and in various other places.
However, in Emacs, the character on the left appears as an empty
square, but the character on the right shows up as the Chinese
character for "you".  Is there some way to make Emacs correctly
display both versions of this character?