Clients Open Directory binding and access to Software Update Server

First of all, hello to you all people here. I just discovered this site and im gonna love it. :oops: I'm quite a newbie with Tiger server, but it's really a pleasure playing with it and discovering its functions. I went to search on all the site for my question but i didn't find what i was really looking for: this is all simple. I got an open directory master which is my tiger server. I set the computer clients with the server dns and the directory service application ensuring its been set the right way (you know delete the prefs sometimes and re-setting it) and as Software update server is running on my server 10.4.8 (even if in the GUI it seems not -you got that 10.4.8 bug too? i only use combo updaters.) i just want the clients to connect to my server for software updates. I found in the apple manual to change some plist with a "defaults write etc....." but is that really the deal? I wonder. I found a little app who does it in the GUI way too. anyway I thought adding the record to directory service would be enough but it seems not? is this apple thingy the only way? what are the methods? Please tell me the answer! i'd be real grateful! thanks a lot in advance ppl! :oops: