To create, see, edit and work on AutoCAD drawings, you no longer need this huge program, which isn't always easy to use and isn't as accessible as you'd like. Now you can use BitCAD IntelliCAD.
This program uses the DWG format, and is completely compatible with AutoCAD (at least with versions up to 2007), without needing any type of conversion. All the original AutoCAD commands, the AutoLISP routines, ADS, DCL and other elements are highly compatible with BitCAD IntelliCAD.
Among the best features, you can mention the total and complete integration with Windows, you can open more than one AutoCAD drawing at the same time, and it has support for editing and seeing rendered images.