I have a program called LinkCAD by Bay Technology 831-688-6435. It is expensive but they offer a month or so for free trial. It works OK so far. ********************************************* Glen A. Landry, Ph.D. Naval Research Laboratory Materials Physics Branch Code 6340 4555 Overlook Ave. SW Washington, DC 20375 USA Tel.: 202-767-4474 Fax: 202-767-1697 *********************************************