Kubuntu 12.04 Not Recognizing Network Adapter

[Guest]

Hi.

I have a new Gigabyte GA-Z77X-D3H motherboard which has an Atheros GbE LAN chip. Apparently this is a new chip that is not currently included in Kubuntu 12.04 by default.

I was trying to follow the instructions here and here to install the alx driver. I have compat-wireless-3.5.1-1-snpc.tar.bz2 successfully downloaded from a different computer and sitting on a USB drive. However, I don't know how to perform this part without internet:

sudo apt-get install linux-headers-generic build-essential

or

sudo apt-get install build-essential linux-headers-generic linux-headers-`uname -r`

In case it's important, I had to install Kubuntu via USB since the computer does not currently have a CD/DVD drive.

Thanks in advance!