MG, the Wii will connect wirelessly, you just need a wireless router for your current internet box (be it DSL or cable). They're like $40-$50 at Best Buy.
Not to be totally off topic but yesterday I bought Singstar for the Ps3, which is a karaoke game. Cheese man and I did our best Amy Winehouse last night.... he said I sounded like a white Eartha Kitt!
Anyone who wants to come over and play is welcome!