Merge Replication -Analysis

Hi

     We thought of moving our project to use replication.

What are the steps needs to be addressed before implementing merge replication.

Please help.

                    1.Two web servers

                    2.Two Application database servers  (replication will be implement in this server)

                    3.Four Content Read only servers.

           The connection will be start from content to application server.

  Thanks,

Muthukumar S