[Zope] Zope unavailable (due to password change!)

Hi! We're using Zope 1.10 and are connected to several databases using Tun32 drivers. We've changed the password today of the person who set up the site and now none of our queries run:, just get "Zope Unavailable". Obviously Zope can no longer log in to our databases. Where can I change the password - is it a "Zope thing" or a "Tun thing"? TIA -- Jenny Campbell ---------------------------------