Hi Brendan, yes like Brian mentions above the v3 beta has DXF import, you can get the v3 beta here: http://moi3d.com/beta.htm

But often times DXF plans may be made up of all line segments and not actual smooth curves, so if that's the case you will want to maybe use the import as a tracing guide or rebuild it or something like that instead of using it directly because you don't really want to have something that's a curved form to be made out of a whole lot of little plane fragments.

- Michael