Yes, you only need to find a wireless connection and you can go on Xbox Live.
Yes you can Yes you can
yes you can
If you mean get it for free using your broadband, you can't! Unlike playstation 3 you have you pay for a subscription (i.e Xbox live) and then connect to your broadband to play. Once you paid for a Xbox live membership, just scan for nearby wifi connections and connect to your router (or anyones if they have no password)
Yes.
The Xbox 360 has no built in WiFi adapter. Without it, the system would have no way to connect to a router to play over Xbox Live, without using a cable. The router is required to access the internet.
No, the DSi can't play GBA games at all.
MY NEIGHBORS ARE USING MY WIFI HOW CAN I BLOCK IT FROM THEM
When using wifi an airport should be on.
Play on the custom game mode infection, and get killed by a zombie, if you play a game by yourself you will always be the last man standing.
The benefit of using a WiFi range extender is that it extends your WiFi, of course. Instead of just getting the average range with your WiFi, the range extender gives your WiFi a boost and let's you enjoy your WiFi at a longer distance.
Yes if you have internet service with WiFi also
do not play online that simple or just use wifi