i think its not much hard if you are not talking about toon shader...
do you need to just use the light & shadows with materials ?
i think you can use free image hosting like :
http://imageshack.us/http://www.tinypic.com,etc
below i attached demo of a picture that i created with 3DGS.
that is using a simple material with ambient light settings ,etc
ScreenShot :
http://i9.tinypic.com/4utrtdw.jpgThank You