I recently changed my router, and the new one uses a WPA2 security protocol. My older powerMac has an airport card, and apparently it cannot use a WPA2 password. All my other computers can use the WPA2 system. Does anyone know if my 1.25GHz G4 computer can accept an airport extreme card, which I think does support WPA2, or do I have to get an airport express port and hook the computer up to that to get my wireless capability back on that computer?