Quote Originally Posted by Stevwen
The Wii can either connect wirelessly to any wireless router that you buy and set up, or you can purchase the Lan adapter ($24.99) that'll let you connect directly to your router or computer that you have connected to the internet.

Either or is a viable option, but keep in mind that a Wired connection will be more reliable and faster. However that does mean that you'll have a cord going from your router to your Wii (and that bugs some people)

I already have the Lan adapter but my computer is on the second floor and my wii is in the basement so wiredless is probably best