Why not go whole hog and make your own? here's 2 options
what about this?
http://www.wings3d.com
or this?
http://www.blender.org
each can create .obj models, set areas for texturing, or even UVmap them (well Wings can, I haven't drilled far enough into Blender to know..;) and they're both free..

I wish I'd said that.. The Staircase Wit

anahl nathrak uth vas betude doth yel dyenvey..;)