The file included, atl2.ko was built in 2007 for who knows what kernel. It isn't going to work...no way, no how...in your shiny new 12.10 kernel. Moreover, your shiny new 12.10 kernel already includes atl2:
Now, if you'd like to provide the requested information, we can start to troubleshoot your ethernet:
chili@LAPTOP410:~$ modinfo atl2
description: Atheros Fast Ethernet Network Driver
author: Atheros Corporation <firstname.lastname@example.org>, Chris Snook <email@example.com>
lspci -nn | grep 0200
Perfectly well, thank you.
I hope you can understand my words