Dragging and dropping custom control awareness

Question

Hello I am creating a custom control called a 'DataGridFilter'.  I want to be able to (in the Visual Studio 2005 Designer) be able to drag this control onto a DataGridView object and have the Filter go down into the bottom of the screen much the same way that a BindingSource Control does when dropped onto a DataGridView.

I have no idea where to begin with this one.  Thanks in advance