Changing DNS to OpenDNS

[mirrorhall]

My ISP DNS Servers keep getting spoofed and i would like to change to OpenDNS. I have a broadband ISP and use a router to log into the PPPoE account (pretty standard).

I would like to tell DHCP to not do DNS and then tell it which servers to use. However, the router will always reset the DNS on renewing their lease. I use dnsmasq to set a local DNS cache (speeds up access to often visited sites) so my first entry is 127.0.0.1, but otherwise the setup is pretty standard.

In gentoo i can go to /etc/conf.d/net and set:

config_eth0="dhcp" dhcpcd_eth0="-t 10" dhcp_eth0="nodns" dns_servers_eth0="127.0.0.1 208.67.222.222 208.67.220.220"

How can i do this in Ubuntu so that the change survive rebooting the router?

New to Ubuntu! Obvious isn't it - Loving it so far.