has the WinExit screen saver, which will log a user off after a specified period of inactivity.

If a non-administrative user attemps to use the WinExit screen saver, they receive:

                                 Error encountered while creating registry key. Make sure you have set values                                 and create subkey permissions.
To allow then to use the screen saver, use regedt32 to navigate to:

HKEY_Local_Machine\Software\Microsoft\Windows NT\CurrentVersion\IniFileMapping\Control.ini

Use Security / Permissions to click on Everyone and select Special Access in the Type of Access drop-down list box. Check Set Value and Create Subkey and click OK and OK.

You can use RegDACL to set these permissions in batch.