how do you get nintendo Wifi?

i have broadband and (obviously) a pc, but i dont know what to get now.

Do you have a router to plug the wii into?

oh sorry i didnt add that it was for DS ;[

Oh right.

Do you have a wireless router?

you mean like this
http://common.ziffdavisinternet.com/...=106201,00.jpg

?

Yes, like that

Well ive got one of them.

Do you know the SSID and the encryption key to connect to it?

not really... how can i find out?

It depends, does your Wireless Router allow access to anyone, or does it use security keys also known as WEP keys? If it does, then you just simply add the SSID (the name of your router you have given it) and the WEP keys, which are a huge string of numbers (and letters? Not sure). If, however, it doesn't have WEP keys, then you need to either buy a Nintendo WiFi USB Connector or just set up your router with WEP keys.