[Zope] Data.fs and admin passwords

I'm installing the new Zope server for a website. I've got everything setup, and I just copied the Data.fs over into the ./var/ directory. Unfortunately, it's having problems. I try to log in as admin, but apparantly all the previous accounts are included in the Data.fs file, including admin. Running ./install to get a new password doesn't work - it gives a new password, but it's not recognized at login. What should I do? Is there some way for the owner of the Zope server to access/change accounts and passwords? Thanks, caffno@wwc.edu