A. NT 4.0 by default uses the "Explorer" shell (explorer.exe), however the old Program Manager (progman.exe) is still delivered with NT 4.0, and be configured to be the default shell using the registry:

  1. Start the registry editor (Start - Run - Regedit.exe)
  2. Goto the HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
  3. Double click on the value "Shell"
  4. Change from explorer.exe to progman.exe and click OK
  5. Exit the registry editor
  6. Log off, and then logon
  7. Back to the old! :-)