ok I've been having some problems with people trying to hack into the members of a board I mod, and I'm wondering what does an IP address have to do with hacking? and if a person does have someone's IP is it easy to hack into someone once they have it? oh and does the free download of zone alarm actually work? people have told me that its not too dependable...and is it possible for two people to have the exact same IP without sharing the same computer?