BT,

Let's start with with WfP. The easiest thing to do is to set the alpha channel to the Wireframe Pro shader like the sample below.

The second option, which I think provides a nicer edge is to use it in the transparency channel and a multiplier on the color channel. Remember to check the invert option in the transparency channel.

Remember for rendering to turn on the lighting through transparency option on the renderer to get the wireframe shadows.

If you have an object that generates an error when you apply Wireframe Pro to it, please forward it to me with directions on how to recreate the problem and we'll get it fixed.

I don't think I understand what you're hitting with the Grooves, though Ken may have pegged it as a mapping problem. If you want to forward me you're scene I can make suggestions to get it displacing the way you want.

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

Eric Winemiller
Digital Carvers Guild
Carrara and LightWave plug-ins