I need something that will allow me to do this with the droid. Please help.
No one's telling you how you're going to use it, but asking how to use Airplane mode implies use on an Airplane. Airlines have their own WiFi setups that are shielded properly, and if you'll read the above threads, you'll find that it's up to the airline how they want to allow or disallow the use of radio-type devices within the cabin. Most airlines (and every flight attendant I've ever met) are pretty adept at spotting and stopping wireless devices in the cabin.