Hi Sarah, I'm glad to hear that you had a good time in NM. It's nice to have been of help to someone, with my limited US experience. I don't know when I'll get to visit my friends in Santa Fe again, but I'm counting the days. When I die (or get my tenure at Los Alamos) I'm gonna live in Santa Fe... Tara -- ______________________________________________________ Tara Deen School of Earth Sciences Division of Geology and Geophysics Building FO5 University of Sydney NSW 2006 Phone: 61-2-9351 4271 Fax: 61-2-9351 0184 email: tara@es.usyd.edu.au ______________________________________________________