You could do that if you would have WLAN with the LAN connector,i think so,but that's silly,beacuse again you need network adapter,but it can be useful if you have ps2 in the other room or something!
So then, would i still need network adaptor? I have a wireless router also. The WLAN just plugs in, recognizes the router and goes. But im not sure if it would configure. I dont think USB would make anything laggy. On the computer, it works just as fast as connecting it to my router.