I've read the other answers--Homeless made a good point--my router is set to serve five computers total. It plugs directly into the main computer and I could do hard wire or wireless for the rest. I have only one additional computer on it now but have debated connecting my old laptop (though it's hardly worth the price of the card).

If you compare the equipment at the time you buy it, be sure that it is all rated the same. I have a Netgear router and the only wireless network adapter card that Fry's had that would work with it was the Linksys Wireless-B network adapter. (Others were out of stock). You can mix and match companies, just don't mix and match network adapter systems. Stick with B or G exclusively.

SRS