> Sorry to bring this up again, I've recently got a couple of computers 
> with the Asus P5Q motherboard on it.
> 
> lspci -m | grep net returns:
> 02:00.0 "Ethernet controller" "Attansic Technology Corp." "L1 Gigabit 
> Ethernet Adapter" -rb0 "ASUSTeK Computer Inc." "Unknown Device 8226"
> 
> uname -rm returns:
> 2.6.18-128.1.1.el15xen x86_64
> 
> I've installed 
> http://elrepo.org/linux/elrepo/el5/x86_64/RPMS/kmod-atl1-xen-1.2.40.3-2.el5.elrepo.x86_64.rpm
> from a USB thumbdrive and the light turns on in the RJ45 connector, but 
> I think I'm missing a key step.  ifconfig doesn't return eth0 information...
> 
> So basically, I think I don't know how to initialize eth0...? Can 
> someone put me on the right track?
> 
> Thanks ahead of time,
> Chris

Turns out there is a driver on the P5Q CD for an Atheros AR8121/AR8113 
Ethernet Adapter.  I ran make && make install and it works!!

I think lspci was mistakenly identifying it...

If you need more information let me know what commands you'd like to see.

Thanks,
~Chris