***** To join INSNA, visit http://www.insna.org ***** hi, Peter this is one of the best sites I have found. the software is fairly easy to use and is quite sophisticated. there is a nice discussion group that is a great resource for developing simluations that supports it (see link on site): <http://ccl.northwestern.edu/netlogo/> john John E. Glass, Ph.D. Professor of Sociology Colin County Community College Preston Ridge Campus 9700 Wade Boulevard Frisco, TX 75035 +1-972-377-1622 [log in to unmask] _____________________________________________________________________ SOCNET is a service of INSNA, the professional association for social network researchers (http://www.insna.org). To unsubscribe, send an email message to [log in to unmask] containing the line UNSUBSCRIBE SOCNET in the body of the message.