I've pulled most of the SW models I've used from either SciFi3D or Vanishing Point. SciFi3D's models are typically in standard easy import formats like Lightwave, Wavefront, etc. and are very high-poly, high-detail models - great for close up work. VP's models are mostly all in Poser format and lower detail, but still great models which can easily be stacked up in larger scenes. Hope this helps!