i picked my new airport extreme so i could use 801.11.n and i followed the instructions. downloaded necessary updates for my new iMac dual core duo. i installed the airport installer software that came with it. i got it working perfectly using the new 802.11.n. this setup had an option for both g and b as well so i could use my G4 powerbook as well which runs 801.11.g. then under the options i saw where there was an option to run only 801.11.n under 5ghz. i tried that option then just to see if if added to my Imacs power and range. then the installer stalled, and now it wont locate my airport extreme. i have tried everything. rebooting, unplugging the cable modem, router, airport base station, uninstalling the software and reinstalling, everything. but the installer can't find the extreme base station now no matter what i do. i now plugged it back into my old base station and it works fine under 802.11.g. im typing this on my powerbook. what can i do? im really ticked off right now, i just couldn't leave well enough alone, but again, why should they give those options if they are going to completely screw up your system? please help! thanks!