[CentOS] DSL battling rojter - help!

realistically you are not getting any dns

when in dhcp mode, the /etc/resolv.conf file typically will point to the
router ip instead of real dns servers

once you deal with that, you should be ok...

thing is, if you stay in dhcp mode, the next time you dhcp or reboot, the
resolv.conf will go back to pointing at the router ip to get dns

so, as others mentioned, if you disable dhcp mode and hard code your ip,
netmask, gateway, and resolv.conf file among other things, you will be ok

 - rh