I bougt a used WRT54G v2.2 about a week ago. Even after a factory reset, when I connect the ethernet cable to my PC, it will not assign me an IP. I also cannot reach http://192.168.1.1 to set up the router. The router seems to boot up fine. the power led blinks and then is steady, the WLAN led is also on. The led for whichever ethernet port I use is also on. When I reconnect the ethernet cable from my PC back to my old befsr41 router it quickly aquires an IP from the router and everything works normally, so I think the PC and ethernet cable are working properly.