Does this help?

www.ubuntugeek.com/...ation-using-command-line.htm\
l

I just put in the OpenDNS servers again in the gui network admin and the did not
show up when I checked again. I followed the info at this link and it seemed to
work fine.

This morning someone was asking me about opendns so I told them what Allen told
me yesterday and the entries I put in are now gone. So I did some searching and
found a post about /etc/dhcp3/dhclient.conf and putting this: prepend
domain-name-servers 208.67.222.222,208.67.220.220; at the end, which I did
but, it still did not take effect.