I just bought a laptop but have no internet access from home. Rather than shell out 50 bucks a month for access through the cable company, I am considering, upon the advice of a friend, the possibility of purchasing a wireless router in order to leech off someone else's signal. My lack of computer knowledge notwithstanding, is this a possibility? Have anybody on here been successful in doing this? I live in a three-story brick walk-up in an urban neigborhood, if this matters at all in getting wireless signals.