Hi - I recently purchased a 15" Macbook Pro in the US. While I was there the airport connection worked perfectly but as soon as I returned home to Australia, no airport......I am running 10.5.3 and have an Airport Extreme Base station. My old machines are running on it fine so I presume there is a difference between the US settings and Australia. I have been through all the help sections but cannot find a single thread on this particular problem. I have restarted the base station several times and the machine works fine on ethernet, just not airport. Any thoughts????