Where can I find concise instructions for migrating a server from 6.0 to 6.5?

Here is my situation - I have an old server with 6.0 sp5 and a nice brand new server. Existing server has DHCP, NDPS, and a Groupwise post office. I want to move everything from this server to the new server. Ideally I would want the new server to have the same name and IP address as the old server.

We don't do stuff like this every day, and I'd be interested in tips and tricks, as well as a general step-by-step procedure. Does something like this exist, or do all of you just know how to do this by osmosis?