Windows XP - Environment variable - Unicode

[sebastien.hugues]

Alan Kennedy wrote:

 > Of course, this may not work if the APPDATA environment variable is
 > set outside a command window. If, for example, it was set through the
 > control panel, then it should be in the system default encoding. But
 > we'll cross that bridge when we come to it.
 >
 >
 >
Thanks for you fast answer. Actually the issue is that this variable is
set by the system itself. It is not accessible from the control panel. 
In the other hand, i don't use any terminal.

So the question is how to get the default encoding of the system ?
I was looking for a while in win32api documentation, msdn and
Google but i didn't get nothing.

Regards
Sebastien