Nacht... definitely use nets... stay away from "wires".
I have to agree with macegr. Eagle's autorouter, while very handy for simple layouts, actually causes headaches in more complicated layouts. Regardless, 9 times out of 10, I will just hand route an entire board. The reason is that even if you think that it may be faster to let the autorouter do the first run and go and clean up after, you will find that you will spend more time than if you actually just hand route the entire thing in the first place.
FWIW, Farnell bought CadSoft recently. Hopefully Eagle Light will still be $49. 
b