I would say check out the flowcharting example installed in the Crainiate -> ERM Diagram 4.1 -> Examples start menu or program folder - that has a very nice look and feel for an org chart.
You an also play with the look and feel using the Diagram Studio Application, although this is fairly limiting.
The Shape.Blend, Shape.CustomBrush and Shape.CustomPen propeties give you more options, and you can even totally take over rendering by overriding the Render methods in a shape subclass and drawing directly onto a Graphics object.
If you have some screenshots from another source you would like us to replicate, please let me know.