I have an OLD OLD Ti Book. (667 MHz, G4; 1 GB RAM, running 10.4.11) Just bought a SISCO Linksys wireless-n router (dual band), high performance. It is set up properly, as my iphone is connecting and my work PC laptop connects too. I am assuming that my old, but kick ass powerbook does not have an airport card built in??? So, I assume I need an adapter? We bought the adapter that went with the router, but after i got it home, realized it is only for windows. Did I miss the MAC one, or can I use this one. Any advice?