If I recall correctly, it's something like /usr/lib/wine. But do a 'locate wine' in a terminal, and you'll find out easily enough.
But that won't help you if you don't have a /home/username/.wine/config file and/or are running the binary incorrectly.
If you have not installed winesetuptk, you should do so (it's available from the Support Files section of the Wine Project Sourceforge page at http://sourceforge.net/project/showf...?group_id=6241
). This will help you create a wineconfig.
The binary, wherever it installed to, did install to a location in your $PATH$, so all you actually should need to do is run 'winex program.exe' (or 'wine program.exe'-- I always forget the binary name for that particular version of the compiled WineX CVS, as I often also install Wine and WineX current CVS from scripts), and it should attempt to run the program (as long as you have correctly configured Wine(X) in the first place).
Hope this helps.