I gave the wrong url for the wiki I posted earlier. The correct one is http://agec192.agecon.uiuc.edu/wiki/ Sorry about that. Jerry Gerald Nelson Professor, Dept. of Agricultural and Consumer Economics University of Illinois, Urbana-Champaign office: 217-333-6465 cell: 217-390-7888 315 Mumford Hall 1301 W. Gregory Urbana, IL 61801