Now that's much more like it. :-) Apropos the legs, why don't you just put some mud stains on them? It will be easier if you do that on the texture before rendering, than later in postwork. What version of Poser do you have? 4 and earlier didn't have such hot textures. 5 has a texture that would actually be useful as a bump. Anyway, try inverting the texture in the alpha channel. No help about Grouper, sorry.

-- erlik