Ian Davies wrote:
> We are developing a Windows XP/Vista product for Simplified
> &Traditional Chinese and Japanese. Due to the fact that there are
> common code points, is there one Unicode font that can be employed for
> Simplified &Traditional Chinese and Japanese software

Ian,
There is no such thing as a Unicode font that works for both Chinese
and Japanese. Although they share the same Unicode code points,
shapes of the characters that Chinese and Japanese users are
accustomed to are different. A trivial example may be
Ideographic Fullstop U+3002. This is a dot. In Chinese,
the dot is drawn in the center of hypothetical square area.
In Japanese, it is drawn in the bottom left corner (or top left
corner if rendering text vertically).

Does this make sense?
--
KUROSAKA ("Kuro") Teruhiko, San Francisco, California, USA