One concern is that A2000 is now 5 years old, and MS won't support things
indefinitely.

That's a really good point. I really like the backward compatibility of
Access, although its not quite perfect.

And added to that is that the upgrade to A2003 should be pretty
straightforward. The next version of Access, though, will most likely use
VBA.NET and would require significant changes to upgrade. Thus, upgrading
now, while A2003 is the current version (and available) may be the best
move. OTOH, seems that nothing new is coming out for a while anyway, so....

Neil