[Zope] What's the best way to go from Zope to Oracle time and back..

Total newbie question here.. The subject line says it all.. What's the best way to go from Zope to Oracle time and back? I would like to store the "beef" of my data in Oracle tables, and "instantiate" Zope objects from those tables.. Obviously this will require going back and forth between Zope and Oracle datetimes.. What's the best way to do this? I thought I had seen something like this in a HowTo, but I cant seem to find it.. Thank you. Chris cbeaumon@msri.org