How do I get on wi-fi do I have to use my computer or have an aoss ..

Uhh I haven't used it but I think if you go on main menu you just click on nintendo WFC or match WFC?(last thing of the three) and as long as you have a friend it should work, then when your in I think it's called match WFC and then it will connect you on

It depends. If you have a wireless internet connection already, all you have to do is go under Nintendo WFC, and then Nintendo WFC Settings, and configure your DS to access your wireless connection. However, if you don't have that at your house, you either have to go to a hotspot (hotspots can be located on the Nintendo Wi-Fi website), or buy a wireless USB Connector and plug it into your computer at play using that. Either way, you should have a broadband connection. When you're all ready, go back under Nintendo WFC, and then Nintendo WFC Match to play.

There are two ways you can do it: at a hotspot or at home.
If you are at a hotspot (Mcdonalds), you can just connect to wi-fi by selecting "Nintendo WFC match"on the outer menu, and then pick the top option. Connecting at home is a little trickier. You need broadband internet and a wireless router. First, you need to set up the options. Go to the bottom option, select an empty spot, press A, and follow the instructions to set up the wi-fi. (For linksys users- if you need the WEP key, type in http://192.168.1.1 in the adress bar, and a pop-up should pop up. Leave the username blank, and type in "admin" as the password. Select wireless, then wireless security. You should see the WEP key. You can change it, but make sure it is 10 digits long, using numbers 0-9 and letters A-F.)(for non-linksys users, go to http://www.nintendowifi.com/customersupport/SupportHome.jsp
To see more info about setting up.)
After you set it up, save the settings, and select the top option. It should work. Remember, the WEP key is case senensitive (ABC isn't the same as abc)

to connect on wi-fi connection you need a router its like a thing for broadband