You can use the Wifi usb dongle if you have XP. But if you get a LAN adapter (wired connection), make sure you plug it directly into your modem rather than to your PC (not sure it will even work like that). As far as the wired connection goes, you will probably have to unplug your modem every time (to reset PC settings) plus have to change out the wires when you wanna hook up the Wii; it can be alot of hassle. Heard lots of stuff about the usb dongle messing up and not working, etc. Why not just get a router?