I have got VIACAD 6 in January 09 and am re-learning cad after 15 years of using Dassault Systems CATIA V4. I am using the CAD on a XP machine. The switch from words (line circle plane point) to icons is a bit frustrating but I am adjusting quickly. So far VIACAD 6 has been easier than I had anticipated and switching from 2d to 3d is great. I do not have a CAM program yet. Appears from this thread that MACH3 would be the best solution. For the $100 this CAD software is unbelievable so far.
Screen CATIA V4: http://http://www.incat.com/index.cf...a=verifiscreen
I also got the 3d Connection Space Navigator space ball. GREAT !