Drag and Drop non-files

I am developing a small app using the VC 6.0 AppWizard generated code
for an explorer like application. My listview in the right pane is set
to report mode - and I would like to drag these items to the tree view
in the left pane and drop
Them there. I see in the literature and code base that this is possible
with filenames dragged from the Windows explorer -
CAN I drag and drop non-file objects to the tree control using this
AppWizard application ?

As a concrete example - my tree view may have a list of clients - the
list view a list of accounts. I would like to be able to drag
portions of this list to another client in the tree view. Is this
possible ? I apologize in advance if this is trivial and I have missed
the technique somewhere.

Thanks

Dan Devine