Caw FAQ's........Links to Tutorials, and Resources. Textures, & Troubleshooting

I have a problem with getting textures in CAW to show up in the add a layer. I downloaded some terrain paints but they extracted from the zip into sims3pack files and those don't show up when I go to "Add a layer" in the Terrian painting in CAW. I don't know where to go from here and I'm either not seeing anyone have the same problem or I'm not understanding what's being said in the forum. I'm not sure.