I′m having a stetic problem now...using sitting pants by Korana, the npc seem levitating instead of sitting:
http://img860.imageshack.us/i/captura7.jpg/
If it was a static object, I could use z parameter to put him nearer the couch, but, as an npc, I can′t do this. I tried pressing F key, but the collision only recognizes the "true" feet of the npc.
Any suggestions?