$ALLUSERSDIR$ is assigned the Common Programs
(WinNT) or Programs (Winx) subdirectory of the All Users directory.
The All Users directory is given by the following registry key:
Registry key
Description
WinNT
Common Programs entry in
HKLM\Software\Microsoft\Windows\CurrentVersion\Explorer
\Shell Folders
Win9x
Programs entry in
HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer
\Shell Folders
