Esther,
I have AS 7 Pro, and agree with Tashar in that, I'm not sure that's going to be what your looking for.

My render was standard poser, the lines were added by the script. You can also change the color or width of the lines, however the width will start smudging if you go too high in value. The script sets up the toon node in the material room (along with several other things) and doesn't interfere with transparancy or transmaps.
It also comes with pretty good documentation.

It's really hard to recommend something for toon renders, because it's so subjective. What looks good to me might not look good to you at all, or not be what you're looking for at all. It is fairly inexpensive, and I've gotten good use out of it.