In google sketchup there is an inbuilt library viewer of models people have uploaded to it, searching for stuff there and downloading straight into your current project can yield significant results.
Almost anything you can think of is there, and coupled with a direct x exporter can be in fpsc in a matter of minutes, it also gives a link to the uploaders profile to enable you to easily discuss licensing of their models.
Its pretty easy, quick and hassle free.
Take a look might save a lot of needless forum model requests
smoke em if you got em