Lock Computer vs Welcome Login Screen

You must go into Control Panel and open the "User Accounts" applet to change this setting. Click "Change the way users log on or off". For maximum security, uncheck the "Use the Welcome screen" option. This re-enables the use of the "Lock Computer" option from the ALT CTRL DELETE menu, but prevents multiple users from being logged on locally at a single time. This also returns to the Windows 2000 style login screen. If you'd rather have the ability to *not* be able to use "Lock Computer" and would rather allow multiple users to logon to the computer at a single time locally, leave this setting checked and also check "Use Fast User Switching".