OSX Server 10.6 - Directory Services (New Basic Setup)

Hi, I have a mac mini server edition and a couple of mac's on the network. This is my first attempt at setting up open directory on the server so client mac machines can authenticate to the server, however after reading and searching on the internet I'm still unable to set it up. So I'm looking for someone to show me how to configure the workgroup manager & server admin too get this up and running. I'm sure if you have done this is the past you will very quickly figure out what I have done wrong.