what you want is a wireless access point. Basically it is a wireless card for a switch, but it is it’s own box. I would assume that they make WAP’s with a switch capability, but i havent been shopping for one since the good ole days of 802.11b, but if you take a standard WAP and plug a hub or switch into it you will be all set. Take a look at the Linksys WAP54G It should get you all set to go. linksys wap54g