Have various MAC machine and OS's from 7.6.1 to OS X on a TCP/IP network. There are over 80 machine on the network. In the past each user used the same ID/Password which gave them access to the internet and that particular machine. I need to create a domain and to allow each user to have an indiviual ID/password so that they can log in from any machine on the network into that particular domain. I was given a MAC 9500/200 running os 7.6.1 w/64MB to use as a server to authenticate the user ID's. Trouble is I know nothing about MAC's. So, can you help me? I don't know what kind of server to load on this machine or the utility to create the ID's. Also what client apps need be loaded. I'm in over my head but I'm a good swimmer. A bit of help will be greatly appreciated.