Quote: "has anyopne figured out how to get multi textured buildings in FPSC from an outside program?"
Multi - textured anything from external source: You need a one piece skin containing all the textures for your model
1. Apply various textures to a models polygons/faces using a modeller that supports it.
2. Get them to fit correctly setting up UV mapping.
3. Export your model from the prog with textures and UV mapping applied - that will ensure that the UV mapping info is embedded in the model.
4. If necessary and one modelling prog does not support the exporting of a one piece skin for a model then you have no other option than to find one that does to get the skin.
Some here I have heard use Unwrap I believe - though I dont have that prog.
Whatever - one way or another you need to get correct UV mapping and one piece skins for all such models.
Some I have heard also say that FPSC can handle more than one texture - again I dont do it that way if indeed it works.