Well Angie,
To give you some background; my initial task was as simple as yours, initially, however, you might find it growing in complexity over time...... I certainly did.
Fortunately, initially, I chose the symbol spt1700 palm based hand held unit to start with, picked it up new-in-box on ebay for 158 dollars (these units are ruggedized for windblown rain and dust and they have the most wonderful scanner built into them). We now have 5 of these units and the tasks that they perform have grown exponentially once the users got them in their hands and their requirements exploded.
I have been able to keep up with them using Satellite Forms as a gui program development base, I also wrote a microsoft access 2000 application which hotsyncs directly to the device for downloading and uploading files and have also picked up several symbol hotsync cradles on ebay with the modems built into them so the users can hotsync remotely over the phone lines.......
If your "project" is simple and your certain it won't creep requirements-wise on you over time, the handheld computer device isn't the way to go..... but if you see it becoming more complex and you have the fortitude to tackle the programming or can find someone to farm that out to, i strongly suggest the handheld computer.
I would personally steer away from the symbol ppt 2700, it has the worst screen on it i have ever encountered, I can barely read the text on the screen even with my most sophisticated pair of reading glasses on. Also, I have found ad-ins for the palm based units are in abundance (this probably isn't as true with the CE based units as they have not been around as long).
Paul