To find Firefox exe, use registry value

HKEY_LOCAL_MACHINE
 SOFTWARE
  Mozilla
   Mozilla Firefox 1.0
    bin
     PathToExe

• Icons in Win32 - John Hornick, Microsoft Corporation

Windows Vista

On a Windows Vista Enterprise system, the exe directory containing exe.conf, the log files, etc. is located in:

  \Users\xxxx\AppData\Roaming\exe\

where xxxx is the user name.