Not a bad turn-out (30ish) for a cold night .... Pointers to the presentation now available at: http://www.business.city.ac.uk/ero/150101.html Paul -- The Library, Tyndall Avenue, Univ. of Bristol, Bristol, BS8 1TJ, UK E-mail: paul.browning@bristol.ac.uk URL: http://www.bris.ac.uk/