XAML Adorner and CalendarWeekPresenter - Drag Drop ????

Hello,

I'm new to XAML with DotNet and would like to create a "drag drop"
feature via the Adorner for a Calendar. Basically, I have entries
under a particular day, and I would like to be able to "drag and drop"
this entry to another day via the Adorner. Does anyone know how to do
this, or can suggest a web site in which they provide an example?

Thanks
Sam