Asp dot net ajax drag & drop control question...

I have been looking into drag drop. Most of the example I have come across deal with something like pageflakes. What I would like to do is have two Listbox controls. One has all available choices (AllListBox). The other would have current selected choices (PickedListBox). User would be able to select mutiple rows from either ListBox. When user draged rows from PickedListBox to AllListBox, they would be removed from the PickedListBox. When the user draged rows from the AllListBox to the PickedListBox, it would add rows to the PickedListBox.

Has anyone seen any contorls like this, or better yet tutorials on buildign a contorl like this?

http://www.asp.net/AJAX/AjaxControlToolkit/Samples/ReorderList/ReorderList.aspx This is close to what I want. But obviously not close enough.

Thanks,

E-

Look at this

http://www.codeproject.com/dotnet/csdragndrop01.asp