As you might have seen in the forums, I have been playing with bump mapping for scenery objects lately. While I was searching the web for a little more information, that might solve my shading problem as mentioned in the forum, I can across a nice tutorial that shows how you could create a bump (or normal) map for an object. I find it a pretty cool idea, I only think it will not be very practical to light a building from multiple sides just to make your normal map.