TTreeview rightclick?

Hello out there, I have a problem with the TTreeview component shipped
with Delphi 2.0.

My problem is as follows: I'm trying to make a Treeview that looks and
behaves just like the one in the Explorer(not the web-browser), but i
can't figure out how to connect an event when the user rightclicks a
node. Anyone know how (this may be a naive question, but i've spent
hours on this).

Kind regards
 Magnus Lidman