what does it say next to IPv4? normally you'd have it set to "using DHCP"
also, when setting it up, i'm thinking you should have chosen "connect to my local network LAN (ie the router), not the modem options, that maybe what's screwing you up, it's trying to find a modem attached directly to your iBook instead of going via the router.
under PPoE (also in Network preferences), the "connect using PPoE" should be UN-checked
also, when setting it up, i'm thinking you should have chosen "connect to my local network LAN (ie the router), not the modem options, that maybe what's screwing you up, it's trying to find a modem attached directly to your iBook instead of going via the router.
under PPoE (also in Network preferences), the "connect using PPoE" should be UN-checked