The Mod the Machine Blog made me aware of a very useful series of tutorials being made available by Autodesk and Autodesk Developer Network. "My First Inventor Plug In" is a series of lessons covering basic Inventor customization using VB .NET (Visual Basic) designed for someone with little to no programming experience. Since I have presented this subject at several user group meetings in the past, I am making the link available here also. One of these days, I am going to have to figure out the difference between a "plug-in", "add-on" and "add-in". :-)http://modthemachine.typepad.com/my_weblog/2011/08/self-pace-inventor-api-development-guide.html