Jack, Jason,

> Need to write a single procedure which I can call with
> two (perhaps more, later) different ibo types.

> What you could do is write an interface that you would
> put in it everything you need these components to do

what about two overloaded methods? More elegant than anything else:

procedure MyPproc(Query: TIBOquery; etc.); overload;

procedure MyPproc(Cursor: TIB_cursor; etc.); overload;

Regards
Salvatore