World 3D maps, where?

Hi,
for my documentaries I need some 3D maps of some countries around thew
world.
Then I will modify them with Edius.
For example I need a map of West Papua, India, Indonesia and South
America (not necessarily wirh details).
Where can I look for them? Can I download them from an Internet site?
Or have I to make them with a software?
thanks

bye Adriano

Adriano