I currently have 4 Windows XP machines in my basement that are connected via ethernet to a Wireless router/switch. These machines aren't equipped with WiFi. We play the game BZ-Flags on these machines and the network works great.
I am trying to add more computers to this network, and being that there aren't any more ports on the router, I was wondering if I could somehow connect some newer computers (MacBooks, iMac, etc) to this existing wired network via WiFi.
Is this possible? If not, what other options do I have to expand the wired network, without getting the machines on the internet?