Have a look at these sites:
http://www.microsoft.com/windowsxp/u...g/default.mspx http://computer.howstuffworks.com/home-network.htm http://www.homenethelp.com/ or search Google for: home networking.
Have you considered going broadband? I've never regreted ditching my old very slow dial-up for the speed of broadband!
My present set up, here in the UK, is a BT Voyager 2000 wireless router (which is connected to the telephone system), 2 desktop computers and a laptop. The desktops each use a BT Voyager 1010 USB adapter, and the laptop uses a BT Voyager 1020 adapter. With the router switched on, I can share my single Broadband connection by either using one computer, or use all three machines at the same time! The computers and laptop are in different rooms, but all can connect wirelessly to the router and onto the internet. Other broadband users have a host PC connected by wire to a router, and another (guest) PC using wireless from another room. There are several choices and methods you could use. Personally, I like being able to sit in the garden and still connect to the internet by using my laptop.