OK, here is my setup. Airport extreme hooked directly to cable modem. (I have earthlink service which is DHCP). IMac hooked directly to airport extreme using ethernet cable. Windows PC in network via wireless connection. Keep losing internet connection. I know there is a way to automatically renew the DHCP without having to manually connect everytime, but for the life of me I can't get it to work. I have been screwing around with this for 3 days now since I got my Airport Extreme.