Previous desktop background context menu option

Hey all, when you right-click on the desktop there is an option for Next Desktop background in the slideshow. Is it possible to add a context menu item for the Previous background? Perhaps a registry tweak?

The registry keys for desktop background slide show settings are:

HKEY_CLASSES_ROOT\DesktopBackground\shellex\ContextMenuHandlers

Value data: {0bf754aa-c967-445c-ab3d-d8fda9bae7ef}

Can this value be changed to produce the desired function?

ja i want delete background option!!!!!
i dont now if is posible...