be dependent on any one PC provided your router is working as it should. I would answer yes to your query, as long as you properly install the wireless card and the network you wish to use has open access.
I have a E machine S2482, Win xp sp2, 768 Ram that is connected to the router. When I say connected to the router I mean it is the one used to set the router up. I also have another computer connected to the router wired and a laptop wireless. I know that when the first computer (Emachine) is turned off I can still get online with either of the others. I need to install a Linksys wmp11 wireless card in the first computer in order to use it on a park wide wireless network. I want to get all the bugs worked out before I connect my network to the parks network. So now my question. If I disconnect the Emachine from the router will my present network still work? If the answer is yes then there should not be a problem when I install the wireless card either. Right?