How to Set up Find My iPhone for free on any iOS 4.2 device
Find My iPhone is one of the best Apps of all, allowing you to find your iPhone no matter where it is, lost or stolen. This video will show you how to install and set it up on any iPhone or iOS 4.2 device, even those not technically supported by the newest free release of the software.
Note: you no longer need a a MobileMe account to use Find My iPhone. JOY!