you can connect your Wii directly to network with a Wii LAN Adapter if you have a wire local-area network
Internet setup selections for a Wii Lan Adapter.
Specifically designed to connect your Wii to the internet, Compliant with USB 2.0/1.0/1.1 specification.
10/100Mbps N-way auto negotiation operation, Full-duplex and half-duplex operation.
Eliminate dropped or no signals from wireless networks, No need external power, just plug and play.
http://www.tradingmic.com/usb-lan-network-adapter-for-wii_p4193.html
more