3 questions about online?

I'm getting a Wii soon and I have 3 questions about online:

- How many wii games have online multiplayer? What are the tiles?

- How do you connect your wii online, is there ethernet connection on the wii?

- Is there lag?

I know it's probably stuff that I should know by now but I really need to know the answer of these questions before I buy it.

So far just Super Mario Strikers, and I think that pokemon game

And you either use a wifi access point, the Nintendo USB wifi thing, or the LAN adapter

Edit: and no there isn't an ethernet port, and I haven't played online so I don't know about lag.

I've read many threads in which people claimthat there islag in mario strikersTuky06

I'm sure it comes up occasionally, but it's clearly not a big problem, according to reviewers at least.

I've read many threads in which people claimthat there islag in mario strikersTuky06

4 or 3 stars and you are pretty much golden and lag free. So it aint bad.