How to set up a server.

Hi all.

I have sevral computers running XP 2 runing XP PRO and 2 With HOME. On XP Pro i can use a domail but how do i make a XP PRO pc act as a server. I don't like the Peer To Per network as That i what i'm already using. How do i get the Pc to say Press Ctrl, Alt and Delete to bigen and to get it to say log on to. I just want to use the pc as a server. Not a Peer To Peer network.

Help me out if you can.