I couldn't fit my whole question in the title but my problem is this. I was recently given a tower by a friend who bought a better one. I had internet set up on my old comp(XP) and he had it set up on his(Vista). I connected(physically) my modem to this tower and I'm able to connect to the internet without creating a new connection. Is this ok or is he going to get my bills or am I somehow getting his internet?