Moi3D -> Rhino3D -> RIB export

 From:  Michael Gibson
390.2 In reply to 390.1 
Yes, Rhino has a direct export to RIB. You might want to grab the demo version first and give that a quick try to make sure it will work for you, but I expect it should be fine.

There's also a Rhino plugin called "RhinoMan" that might be useful, I think it is set up to make the RIB export better yet with stuff like assigning shaders, etc..

- Michael