As many of you know, the Nintendo Wii comes with WiFi enabled. However, many people do not have wireless routers in their home. Nintendo had created a solution buy selling either a USB Connector that plugs into your computer that has internet connection or buy selling a LAN adaptor to plug straight into a wired router.
However, Nintendo has not been selling the USB connector very well, so they have discontinued it. You may still find one on eBay, but it will be tough. The only two options would be to buy a wireless router or buy a LAN adapter. They are not very expensive anymore.
It is definitely worth doing it because the Nintendo Wii has many features that are enabled with an internet connection. You can download old console games, browse the internet, and play multi player games. Be sure to make sure you are connected for these holidays!