migration file server

Hello all,

I would like to migrate a file server to another file server. Problem
is, I want to do this so it's seamless for the endusers. I have the
following plan:

1) copy data from old file server to new file server
2) shutdown old file server and change IPaddress of new fileserver
into ipaddress of old fileserver
3) check DNS that A records of old server and new server are pointing
to the same IPaddress
4) delete records of old server out of WINS

The reason why I want to do it this way, is because a lot of users
(2000 users in total) manually created some network mappings to
shared folders of the file server. So normally if they reboot their
machines (so local DNS cache is flushed) and they logon to the domain
and DNS and WINS are replicated to all DNS and WINS servers, they
should get their mappings just the same as before but this time they
are pointing to the new file server.
This is my thought, but I don't have a clue if this works. Any advise
is welcome.
If there are other ways of doing this, please let me know.

thanks in advance for any help,

Joeri Kumbruck