Home Zone can trigger user-defined actions as specified Airport networks or Bluetooth devices appear/disappear from the location of your notebook.
What's new in Home Zone
Version 1.0b9 (0.9.9.1):
Added Network IP/Host trigger
Added Airport enable/disable actions
Added iChat/Adium status action
Added intelligent trigger evaluation; zone availabily test will check easiest triggers first and skip unneccessary checks of harder triggers. Order is Network, Airport, Bluetooth. This way, you can save bluetooth power by also defining a network/airport trigger in a zone where "any" trigger is sufficient to determine availability. You can also cut airport scan load by defining a network IP trigger with your router's IP address instead.
Made actions rearrangable, defining execution order (drag to rearrange)
Copy any custom actions to ~/Library/Application Support/Home Zone/Actions/ as Home Zone updates will override your actions otherwise