Boosting wireless connection?

Ive heard that wrapping wire around the antenna and putting a can around it (open on both ends) increases wireless connection. I want to be able to use my PSP online at my neighbors house (2 doors down) and my connection doesnt reach him we have a Linksys wireless G notebook kit...

 

Is your neighbor aware that you are piggy backing onto his/her network? Typically (pending where you live in the world) this is illegal.

 

Yeah, it can increase it just as putting a Fan to push the wave toward the source might increase it too.

On the other end a better higher dbi antenna might work better.

 

Not piggy backing, they dont have a network, just a cable modem connecting to one computer... I finished it and it boosted the signal enough to play in their backyard. I password protected it so only we can play on the PSP, since only we know the password!