I think you can use Blender for modelling ships...
 

... if you use the .x exporter on this page...

http://members.xoom.virgilio.it/glabro1/python228.html

Now if I could just figure out why Blender is so slow on my system... it used to work just fine, but now the menus take forever to draw... not to mention figuring out how to actually use it http://forum.shrapnelgames.com/image...s/rolleyes.gif