simple wxTree drag-and-drop example please (newbie)

Hi all,

First of all thanks for wxPython, I don't have to say what you already know
: it truly rocks! I don't know why the python community doesn't drop this
'Tkinter is Python's de-facto standard GUI package' crap...

I'm having a go at learning the wxTree control, but i'm still a bit confused
when it comes to implementing drag-n-drop. Can somebody post an extremely
simple drag-and-drop example using the wxTree control in which the user can
reshape the tree by moving nodes around? It would be much appreciated.

(PS: sorry if this question has already been answered: I haven't been
successful in my searches)

Many Thanks.

Sam Anderson
sa@bayt.net