Thanks for the response, Peter.^^

I've checked the shaders at the D|S Freepozitory, but I was kinda hoping to start getting a better understanding of how they work so I don't have to keep bothering people over this. If there is an explanation somewhere of what everything does, I've completely and utterly missed it.^^

As for the textures, the current set would be hair. I'm hoping to bring out the hair's highlights a little bit to give it a more of a natural (and not so flat!) look. I'm not sure if that's even possible at this point in D|S or, if it is, if it requires the purchase of a third-party item like pwsurface or something else.
If you could point me in the right direction, I'd very much appreciate it.

Really, thanks again.