I just took my macbook pro into the apple store and had them replace the disk drive. While at the Genius Bar I had them take a look at my airport to make sure that it was ok. I have qwest internet and my macbook will "connect" to my wifi but the internet wont work. Anyways- I just got home & was checking the new hardware that was replaced & now my airport card says "no airport card installed." I went into system preferences & tried to turn the airport on under the networks tab, but no luck. I have restarted it a few times but no luck either. Any ideas??