How to enable screen saver from GPedit

1-enable GPedit (if it is disabled ) from
http://www.annoyances.org/exec/forum/winxp/t1040951406
set the Restrict_Run data value to 0, if it exists, at: HKEY_CURRENT_USER\Software\Policies\Microsoft\MMC\{8FC0B734-A0E1-11D1-A7D3-0000F87571E3} and/or
HKEY_CURRENT_USER\Software\Policies\Microsoft\MMC\{0F6B957E-509E-11D1-A7CC-0000F87571E3} Exit Regedt32 and try to start Group Policy Editor
or [
HKEY_CURRENT_USER\Software\Policies\Microsoft\MMC\{8FC0B734-A0E1-11D1-A7D3-0000F87571E3}]
"Restrict_Run"=dword:00000000

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2-in under Local Computer Policy\User Configuration\Administrative Templates\Control Panel\Display.

Table 8.8 Group Policy Settings That Can Affect Screen Saver Functionality

Group Policy Setting Description
Hide screen saver tab
Removes Screen Saver tab from Display in Control Panel.

No screen saver
Enable to prevent any screen savers from running.

Screen saver executable name
Specifies the screen saver for the users desktop and prevents changes.

Password protect the screen saver
Enable to set passwords on all screen savers. Disable to prevent passwords from being used on all screen savers.