bryan,
if you have an OD master in the mix, manage it that way. if not, you can probably use Casper's local mcx to do the same.
otherwise, check out dockutil: http://code.google.com/p/dockutil
you can add a folder pretty easily like so:
dockutil --add '~/Library/Printers' --display folder --allhomes
i'd avoid monkeying with a script to do this if you're already using mcx, though.
- nate
