Before we get into the "how," let's discuss the "why." Scouring the mytreo.net forums will yield horror stories about catastrophes, unplanned hard resets, and resets that make you lose all your preferences. The simple fact of the matter is that, when you own a device that is largely a means of information storage and access, it's in your best interest to protect that data.
When you first get your Treo, you are prompted to install the accompanying software to your pc or mac, and then perform a hotsync. There are really two purposes to a hotsync: 1) to give your device a unique user name that will not only identify it during future hotsyncs, but allow software to be registered to that unique name, and 2) to create a backup on your computer of all the information stored on your handheld. So your first lesson is: Sync often, and sync regularly. Something will happen to cause you to need that backup. It's just a matter of when. (more...)