networked through a server, and if they are how do I make a printer into a network printer and access it from all the computers


What is the difference between CONNECTING printers to a server vs networking them by connecting them to a router

Oh by the way , the PCs are all running XP.Are these the computers at your home?
Do you have them all hooked up to a router?Yup, they are at my place.  Two are mine and the other three are a friends.  I had some techie come out and do something to get them to WORK together but that techie is nowhere to be found now and I dont quite REMEMBER what he did to get themm to work together.  Anyways, I want to get a printer also in the setup as a network printer so that it can be ACCESSED by all computers.  I have a router but I dont think it is being used as it in another room and it is only hooked up to a modem but there are no other wires going to any computer.
Well if those computers are on the same network, you would go to Start and then Control Panel. Select Printers and other hardware. Now select Add a printer and the Add printer wizard will run. Here select "a network printer, or a printer attached to another computer". Run the wizard and you should be good to go. You will have to do this on each INDIVIDUAL machine.Would the procedure for adding a network printer be the same whether a server was being used or a router?

And which computer should I install the printer drivers on?