Sometimes you create 2d shapes in Illustrator and want to extrude it to import to Flash using Away3D (like 3d map?), here is basic workflow that I use:

Illustrator
- Create a 2d shape using pen/shape
- Save vector as Illustrator 8 format

3dsmax
- Import the file to 3dsmax
- Select all then go to modifier list
- Choose ‘Extrude’ then ‘Cap Holes’
- Export to ‘.obj’ file

Away3d
- Download PreFab3D from http://www.closier.nl/prefab/
- Import 3d model to PreFab3D
- Export to Away3D AS3 class

Flash
- Now you can use Away3D AS3 model class like normal 3d object as it is extending ObjectContainer3D!