This might be of interest to some.
I have been doing drawing with Autocad from Autodesk for a fair while.
with a free student licence that lasts for 3 years.
it include most of their products like
AutoCAD , Maya, 3DS Max, Revit, etc
I only started with 3DS Max last week and I have been exporting basic static models as direct x with no issues.
http://www.autodesk.com/education/free-software/all
enjoy
I may be old, but at least my memory still ....hmmm
Pavilion dv6 Notebook, Intel(R) Core(TM) i5-2410M CPU @ 2.30 GHz, Win 7 64 bit, 16 GB Ram, Radeon (TM) HD 6490M, 2336 MB Memory. Resolution 1366x768, Intel(R) HD Graphics 3000. (WEI 5.8)