It is time for me to put some 3D character models in the game, but I have run into a gigantic problems.<BR><BR>I know how to import various types of 3D models, but I cannot <B>animate</B> them.

Sketchfab has built a huge library of 3D models. Some of them are available under a Creative Common license, others can be purchased. The startup now wants to help you do stuff with all this content.