Welcome in Glest
1 you can convert 3d models in g3d format with 3d studio or blender
2 you need to animate them into 3ds or blender and then create the g3d animation
3 in the same way of units ... u create the 3d model of building and convert it
4 the attack must be made in the same way of waling ... animating it into 3dstudio or blender ( there are some movement files somewhere i know)
5 it's a long long work for each model but could be funny
Welcome