Hi all, The Webcasts of ZOO presentation at OSGIS 2010 is now available at http://uiwapmds01.nottingham.ac.uk/QCSPlace/ondemand/Events09/7d0f0a49f29ca5dbd0b5c9d7db/run.htm Great presentation Gerald! Some other great presentations too at. http://cgs.nottingham.ac.uk/~osgis10/os_home.html Best Venka