maybe you'll give hlsl a chance?

here you'll find my ready2use toon shader
http://www.earthcontrol.de/main.php?loc=...p;aktion=listit

and in this thread you'll find the solution to use only the outline:
http://www.coniserver.net/ubbthreads/showflat.php/Cat/0/Number/813095/Main/811388/#Post813095