Anybody out there know if you can run more than one firewall protector at a time?? I have recently installed the Norton Firewall.........can I download the zone alarm freeebie, and use that as added protection....or will it just mess up the other (Norton) firewalls settings/info/filters????

I am running a cable hook-up, and it didn't come with firewall protection...I got hacked........Any information would be appreciated...Thanks.