It is called IronCAD. Definitely not free, but it is one of the fastest & easiest CAD packages I have ever used. You can get a 30 day fully working trial for free, and a little looking around can make it work a indefinitely (versus paying a sum that could buy 2 M42 cars). I of course have no idea where to get a crack, but they are out there for the pirates to plunder I am sure. Just don't get caught.