BT,

Settings shouldn't be different for an imported OBJ. If you've got one that doesn't work, please forward it to me.

I guess I misunderstood the question when you mentioned that you didn't want to see the polygons (like you do in the renderer). There is no backface culling in the shader. It probably wouldn't be a hard thing to add to the shader(since we already do it in the renderer), perhaps for the next update.

The other thing you can try is create a transparent object and use the wireframe renderer, that would look something like this.

Regards,
Eric Winemiller
Digital Carvers Guild
3D plug-ins for Carrara
http://digitalcarversguild.com

Eric Winemiller
Digital Carvers Guild
Carrara and LightWave plug-ins