Ok here's my problem. We have a wireless internet connection, but we also have a big house. the router is in the front of the house, and my room is in the back. in my room, the network is not detected by my laptop, but if i go into my sisters room right next to mine, it works just fine. seems weird to me, but anyway, is there some kind of device i can make or buy that would expand the area covered by the network? i'm especially interested in something i could make myself, sort of like the tin can antenna thing. any help is appriciated. thanks.