Also - how to make it self-destruct in <10 invalid passcode attempts.
Shtep One: Download the iPhone Configuration Utility from Apple
Shtep Two: Futz with the Stuffz
Not shown: there's an option at the bottom where you can stipulate self-wipe after as little as 5 incorrect passphrase attempts.
Shtep 3: Upload config as per instructions in the "Installing Configuration Profiles" section of the Deployment Guide.