I am an experienced Cad user and I love Progecad 2008 (smart). I worked with AutoCAD , UG Nx, Solid works, an inventor. All those programs are 5 to 20 times more expensive when you buy them for professional use. This program is a very price worthy alternative to AutoCAD 2008. And the best part: it’s free for private use! No limitations. The program runs under windows vista as well. Progecad 2008 has all the features of AutoCAD 2008… And more. Almost the same procedures and commands makes it very easy to get used to the program if you have used AutoCAD before.