migrating from nt4 2000

I am running nt4 backoffice and wish to change to 2000 server
i have 1 server nt4 and around 30 workstations running win 9x and nt4 workstation
what is the quickest way to start running 2000 server i dont need to upgrade as i have purchased 2 win2k dell servers. can i run them side by side and gradually move over starting with using the 2000 server to validate logons then copy logon scripts and then copy data