isaac
How obslete it is, is in the eye of the beholder. As Chris mentioned there is plenty of software still available for that H/PC and the internal Pocket Office software etc, is very usable, if you learn to accept the limitations.
Your biggest problem will probably be trying to locate a replacement for your main battery...... then again, if you start using it on a regular basis, you will probably end up wanting to upgrade to a more current unit, such as a Jornada 720/728 or a Mobilepro 900/900c.