Some free 3d Modeling programs: -Amapi 4.15 - http://www.eovia.com -Ayam 3d 1.1 - http://www.ayam3d.org -Blender 2.23 - http://www.blender3d.com -Wing3d 0.92 - http://www.wing3d.com -Metasequoia 2.1 - see mark34 address -Gmax 1.1 - http://www.discreet.com -Maya Personnal learning edition - http://www.aliaswavefront.com -XSI Experience - http://www.softimage.com But for the 3 last, you can't export anything. I'am learning Amapi together with Bryce. It's working good.