"John.N." wrote in news: snipped-for-privacy@eclipse.net.uk:
You need one wire/wireless Access Point router.
You need 1 wireless card. You should leave one machine with a wire connection connected to the router.
You should buy a UPS/AVR system to protect your investment. The router likes good clean and constant power and doesn't like power spikes or drainage on the line from household appliances switching on and off all the time and will go defective if it happens on a routine basis. Belkin makes good ones.
You may want to look into a print server that plugs into one of the router's LAN ports and wire or wireless machines can print to the network printer.
They have setup and install wizards now, user manuals and Tech Support for the router and the wireless card, even the print server.