Autocad is a very flexible tool and it can be used for a wide variety of task. However, one thing you can't do with AutoCAD to animate a 3D model. You can, of course, create slides of perspective views and show them one after the other using a script file (see "Perspective,Slides and script" for details) but this doesn't begin to approach the quality of animation which can be produced with the aid of some other software utilities.
This tutorial shows how to create an animated walkthrough of your AutoCAD 3D model using 3D Studio VIZ. All you need to start is an AutoCAD drawing with some 3D content. The end result will be a. AVI file which can be viewed on any window PC.AVI files can also be embedded within PowerPoint presentation along with text and other graphics to really demonstrate your design proposals.