I've been googleing around but failed to find a solution for my need. I'm using wordpress 3.0 and TwentyEleven theme as default pack. In the Dashboard -> appearance->menus that allow user can create menu items from Pages,Categories,and custom link. Now I want to add a box like those boxes above but it would list my custom-post-type's taxonomy and metadata. How can I accomplish with this task ?
I know how to add metabox and taxonomy for custom post type but cannot do with this sort of thing.