I'm fairly new to using os x server, here is a little background information on my current problem.

I have a os x 10.2 server connected to a hub with a number of mac mini's running 10.5 connected to it, the server quite happily dishes out dhcp addresses to the clients. The problem i'm having is that i setup open directory using the assistant and configured it to use netinfo which is supplied with dhcp. When i open directory utility on the client machines they cant detect any directory. machines can ping in both directions so there isnt a connectivity issue. Any help would be much appreciated.