Note that as well as installing the menu code, this should also add the following entry to the navigationControl providers in your web.config:
<add name="DDRMenuNavigationProvider" type="DNNDoneRight.DDRMenu.DDRMenuNavigationProvider, DNNDoneRight.DDRMenu" />
(a backup will be created called DDRMenu.backup.web.config). This entry should be removed if you uninstall the menu module.