Screen saver timeout
The wait time for a screen saver specifies how much user idle time must elapse before the it is launched. This can be changed by accessing the property pages of the desktop, in the Screen Saver tab. How ever when a group policy is set to not editable on this setting, one cannot edit this setting using the property pages, even if the user has administrator right on that computer.
The work around for this is to directly edit the value of the “ScreenSaveTimeOut” key at the following location. The value is represented in seconds, the setting below has a time out of 30 mins.
[HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Control Panel\Desktop] "ScreenSaveTimeOut"="1800"