You don't need to.
Just modprobe forcedeth or compile this driver in the kernel, if you know, how to do it, and your ethernet is ok.
Then you can use dhcpcd ro get an address from DHCP or ifconfig eth0 your.static.addr.ess, if you have static.
Yes, yes, if you wish to use nVidia hardware firewall, you need to use their proprietary driver. But in other case forcedeth is just fine. Tested on AsRock K8NF4G (6100/410).