Suppose if you have the board, a cheap or free upgrade is not too bad of a way to go.
Just FYI, you can get a motherboard + Celeron 2.8 Ghz for 80 bucks shipped from newegg. Granted, you'd need to get a power supply and probably memory, but you'd be able to slap together a much more modern box for not too much scratch.
That, or just convince someone you know to buy a new computer so you can take their old one 'off of their hands' for them.
I used to have tons of these things, but I cleaned house a few years ago and got rid of everything was older than one generation back in HW.
Ton of em on ebay, for around 10 bucks shipped if TOK doesn't come through for you.