Fast Help with Java RMI problem

I have a need to run up an RMI connection in a client server app that currently uses an ObjectStream to do its work. I have at this point a need to use RMI to enable the client to request a set of transactions and the server to send them. I have go something basic working, but need some help with the RMI stuff including security certificate. I have never used RMI before and need some help. This is a job ideal for someone with some immediate time to kill, might only take an hour. I will take the first bid from someone with good RMI experience who is immediately available. ! DO NOT apply if you have not experience with and are familiar with Java Remote Method Inv. And security policy setting. This should take someone with experience very little time indeed!