Ring Mat Database is that window you use to add custom mat textures to your created rings. You've already used it before right?
Here's the thread for carlzillas mod suite
http://www.fpwarena.com/forum/viewtopic.php?f=25&t=1470
He posts an updated version in the first post a day or two after each update from spike.
When I get home I'll try and take some screenshots to give you a better idea of what to do.