How do you play other people online?

My brother has a Wii at his house and he was asking me how to connect on some games to play other people online?

runescape money

i always saw a guy selling runescape money .but dont know if my account will be banned when i bought?

i think it can, but i dont think its likely to

I had seen the runescape money guy before.

dont you need friend codes to play online?

it can differ from game to game, and whether or not he wants to play with anyone in particular. I mean all I had to do to play mario kart wii was just go to the play online option (dont remember the exact names of these menu options) and choose battle/racing, and play with people in my region / all over the world, and it pretty much did the rest.

edit: the first link is pretty helpful as well, hth