Unity Indie and Static Shadows

If you're using Maya, you can bake a light-map. There's a tutorial on it here. Otherwise, I don't think it's possible to make shadows like that in Unity without Pro. But then again, I'm not that much of an expert on lighting, so I can't definitively say you can or can't do that.

you can bake your lightmaps with 3d's max or maya. max extension for creating lightmaps in 3d studio max and tutorial to create lightmaps in maya you can create lightmap for terrains inside of unity in Terrain menu. the lightmapper only uses directional light to create the lightmap. so use max or maya.

Yeah, lightmapping's the way to go. There's a great plugin for Sketchup, I believe, but I don't remember what it's called. You can also lightmap with Blender, but it's a pain.