How do you show mesh and face lines in render?

I’d like to render my object with the mesh lines showing. How do you do this?
Something like this: http://www.blendernewbies.com/tutorials/swf/3d_ring_band/3d_ring_band_final.html

Thanks.

http://blenderartists.org/forum/showthread.php?p=844650&highlight=wireframe+material#post844650
Check the last post there, I think that’s what you need to do.

Thanks craig,
I found another tutorial on BlenderNewbies on how to render a wire frame: