I'd also recommend Vyas's reference for the general properties.
Replicationwise, you must have the same servername, or else you'll need to
script out the replication setup, change the references to the server name,
apply the scripts and then initialize the subscribers. If you can name the
new box with the netbios name of the old one before installing SQL Server
and restoring the databases, you should be fine. For this to work, you'll
need to stop replication and take the old server off the domain (or rename
it).
Cheers,
Paul Ibison SQL Server MVP, www.replicationanswers.com .