The part file was created by Techshop in Autocad and then the G code that tells the computerized mill what to do was made in Vetric. After machining, a student that had already taken the sand blasting class finished up the parts.
When I started with my home shop 15 years ago with a small Maxnc 10 mill, I really had no support or training at all. It was very difficult to learn on my own. Techshop is a great resource because while there is still a very large learning curve to learn CAD/CAM programs and work holding, at least you have Techshop's Dream Consultants and classes to help with whatever you want to do.
So, take a class. Sign up at http://www.techshop.ws/ and start on that project.
And if you don't have a Techshop near you, send them an email and tell them you want one. I'm sure it was a coincidence, but shortly after I sent an email begging them to open a Techshop in Chandler Arizona, they announced they were going to. Pure coincidence or fate? lol. At least I was one more voice asking.
Techshop Chandler has been open a few weeks now and there are people making all kinds of really cool projects, starting businesses and having fun. People are already making medical devices to wedding props. Amazing.