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