to get the ip address of a computer on the internet is not only possible but very easy.
open a dos prompt while connected to the net, and type
"ping antionline.com", or any other url you want to know the address of.
as for someone knowing that the've been hacked without a firewall, they probobly wouldn't. unless the hacker is malicious or a joker. They might catch on when they get their phone bill and see aol has charged tons of porno sites to their account. if their observant they might notice too much disk activity when theyve been readint the same page for the past few minutes, but more than likely they wouldn't. firewalling is a must
