I came across this program at google...

[manoman81]

http://sketchup.google.com/

Cons: The only bad thing is that it can export only to Google Earth

Pros: We can now build a huge freakin' statue of the Smoking Yoda!!!!

[IG-64]

Yeah I've heard of that. I downloaded a few models in Google Earth. You could just download GMax or Blender; they probably wouldn't be as easy to use, but they're more flexible as a 3D modeling program.