Oh, okay
*looking up info*
From the information I have, it probably cant do a large amount of things, but its main purpose is for scheduling events, taking notes, etc
Try going to the US Robotics PDA website (if you can find it) there should be synchronizing software there that will allow you to backup the data to your computer, and use your computer to make events and schedule them.
The device can probably hold 1-16 MB of memory, which is great for a device like that.