The Wii is gloriously Wi-Fi enabled right out of the box, a lovely addition to the console. But, alas, not all of us are high tech money-throwers with advanced router setups in our third floor libraries. Well, we are (though it's in the fourth floor media-viewing room), but for everyone else, Nintendo has announced an Ethernet kit that will (presumably) take a standard ethernet cord and run it through one of the two USB slots on the back of the console.
Another option is the Nintendo Wi-Fi USB dongle, an option made available for DS users without a router. However, the limited availability and relatively high price have been a bit of a barrier, so it's nice to see that Nintendo is offering a hardwired option. Plus, wired speeds and connection stability are still generally superior to any wireless network, so some of
us you rich boys might want to pick one up regardless.