look on eBay for a Cantenna, like an antenna but made with a can. get one with a built in radio.
You can't
No, because Wi-Fi is the wireless part of wireless internet.
No, you canot
It depends if you have public internet in your area or an unsecured network.
you buy the wireless adapter
Internet by cable is ofcause faster than Wireless but wireless is easier to connect to and you can do so anywhere around the routers range without a cable connected
Your computer will have to have a built in wireless card. You can then go to a WiFi hotspot.
you can't DSi is ONLY wifi enabled.
You need to add a wireless access point to your wired internet.
you ab transmetre
You would have to have wireless internet.
Wireless high speed internet allows you to use your laptop without having it connected to the internet via a cable hook up. You can use your laptop anywhere in the house if you have wireless.