What should my Wii setup be? casual gamer

[StevieG]

Please straighten me out on what Wii equipment I would be looking at purchasing.

I have searched this forum and done a Google search. The Wii FAQs tend to be on various features of the Wii, and a lot of the posts here tend to be about which games to get.

I am considering getting a Wii to play socially. I understand the Wii Play game comes with some extra controller piece, and that's a good thing, but really I am rather ignorant about the Wii.

So what am I looking to buy in order to have as many people as possible stand around and play tennis, etc.? What components will I need?

What is the best way for me to assemble that list (things like buying Wii Play and other tips helpful)?