CAD programs: ArchiCAD http://www.graphisoft.com/products/archicad/ CADintosh http://www.graphicconverter.net/us_cadabout.html DenebaCAD http://www.deneba.com/products/denebacad2/default.html DesignWorkshop http://www.artifice.com/ FormZ http://www.formz.com/ MacDraft http://www.macroenter.com/Microspot_Macdraft505.html PowerCADD http://www.engsw.com/ RealCADD http://www.adx-online.com/realcadd/realcaddus.htm SketchUp3D http://www.sketch3d.com/ VectorWorks http://www.nemetschek.net/ Randy B. Singer Co-Author of: The Macintosh Bible (4th, 5th and 6th editions) Given that, sooner or later, we're all going to die, what's the point of learning about integers? - Calvin and Hobbes