We have some documentation on how to use AT commands on Forum Nokia Web site although I have to admit that the documentation is scarce (see some AT command reference guides here ). To be honest, I did not have a clue anyone was using AT commands anymore - especially to connect to mobile phones...
I am a big fan of SysOpen Digia's ImageExpo tool, which allows you to display the phone screen on a big screen (for presentations and like) through a computer (over Bluetooth or USB). With that tool it is really easy during a talk to demonstrate midlet installation procedure, show how to...