I have no idea what I am doing, so please send me a message if you get this. Thnaks Dave __________________________________________________________________________ Prof. David Griffith Tel: +61 2 4221 3515 Department of Chemistry Fax: +61 2 4221 4287 Centre for Atmospheric Chemistry Email: griffith@xxxxxxxxxx University of Wollongong Northfields Ave. Wollongong, NSW 2522 AUSTRALIA http://www.uow.edu.au/science/research/cac/UOW020358.html