Basic Cube in AS3 in CS4

I’m new to 3D in Flash, I’ve worked for a while with basic CS4 3D functions (rotation flat objects basically).

Now, I want to create a cube dynamically and start working with it.
Since I don’t want to start messing around with Papervision or Away3D for a basic cube.

I wanted to know how I can create a cube using AS3 in CS4?