what do i need to create a wireless network

[computerdude2004]

I have a Linksys WRT54G. It runs at 54Mbps, but works fine for what I want to do. I don't game or tranfer images over my network, just word documents and stuff. I don't need a fast network for that. My cable internet connection is also across the network. The WirelessG network's speed doesn't affect my internet speed. My network has four computers on it.