Amapi is dead. Forget about it.

If you REALLY want to work with WOW new apps these are, I think, by far the best about.
AND, at very low cost to purchase. (MoI is a Nurbs app like Amapi)

http://moi3d.com/index.htm

http://www.3d-coat.com/

However, even so, Blender 2.5 (FREE) is due very soon and THAT could be the ants pants of value for money of all the apps.

Brian

bwtr