[Zope] How to restore Data.fs?

[Praveen Kumar]

Dear List,
     I have a back up of Data.fs file. I took that from my server and
want to put that in my machine. I newly installed my Zope server. Copied
the Data.fs into /var/zope/var/ and restart the zope server but not able
to access logged into the Zope management interface. I used the
previously used user name and password (same as in the server) to
access. But not able to access. Please let me know where I have gone
wrong?
-- 
Regards
Praveen Kumar,
SoftPro Systems Ltd,
Ph: 91-40-23111806
23111806