1)   Transparent Screen Lock PRO for WinNT/2000/XP/2003 4.50
Password protect your workstation or server with Transparent Screen Lock PRO while viewing programs that are running. Run as screensaver. Prevent system access via CTRL-ALT-DEL. Grant access to Adminstrators or other authenticated users.

 2)   Transparent Screen Lock for WinNT/2000/XP/2003 2.10
Password protect your workstation or server with Transparent Screen Lock while viewing programs that are running. Any attempts to access the system will display a message box to request the password. Includes a log file to track activity.