If you’re using an old graphite or snow base station and thus need the older AirPort Admin Utility, but you can't find it, note that it may still be on your Mac, but with a new name. When you install AirPort Utility or upgrade to Leopard, the original utility gets renamed "AirPort Admin Utility for Graphite and Snow" (find it in /Applications/Utilities).

—Posted by Tonya Engst on October 31, 2008