Well there is a way to find out if someone is using your wireless internet. Since I don't know what kind of router you have all i can say is go to your routers configuration page and go under wireless and look for traffic or something. To get into your routers configuration page it would be something like 192.168.x.x Mine would be 192.168.1.1. But different routers have different numbers at the end (or even a completely different number). Also you'll most likely need a username and password to access your routers configuration page. Sometimes it has a username of Admin and a password of admin. If you don't know what it is just google it. And if you don't want them you could (possibly) change them. And if you have a WEP key to use your wireless internet then most likely no ones on it. But sometimes some one can get on. Idk how you could find your WEP key. I found mine underneath my router. I hope this helps. Thanks, ~Acer101~
