To send a file using Bluetooth to a computer running Mac OS X 10.5 Leopard, you must enable Bluetooth Sharing in Sharing preferences. By default, Bluetooth Sharing is turned off in Leopard.
- On each Mac OS X 10.5-based Mac, from the Apple menu, choose System Preferences.
- From the View menu, choose Sharing.
- Check (click) the "On" box next to Bluetooth Sharing.
- Close the Sharing preferences window.`