Again, thanks for the responses. Although insiteful, I'm really left at the same point I started!

I think, though, that I will recommed the switch. Not in the original version, which we are just finishing up right now, but in a v1.5 release or something. It would be easy enough right now to write a script to get the addresses and put them in a seperate table.

Since we are using PHP 5, it would be easy enough to update our classes to handle the new setup. Man... I do love OOP.