postgres replication

I'm tying to set up replication between two servers using rserv provided in the postgres source contrib/rserv, as well I'm using the rserv howto http://techdocs.postgresql.org/techdocs/settinguprserv.php . I'm somewhat confused as it only show how to replicate local databases, and I would like to know how to do it across our network. Is there some other documentation that shows how to accomplish this?

Mike