as far as I remember slim shady can import .3ds, .x and .b3d and may export to .b3d only, both, lightmapped and nonlightmapped. The philosophy of exporting .b3d only makes it a Blitz3D tool only, so to say.
http://www.melog.ch/slimshady/slim shady is based on the YAL open source lightmapper, it's a simple thing and unfortunately it lacks of directional light (sun), has Point light only, so it's rather useful for indoor enviroments, although you may use a distant point light with a high radius to get something that is kind of like sunlight.