Turning off the firewall can actually be more of a hinder sometimes...when you turn it off, the computer will sometimes go into a 'lockdown' sort of thing and block much more than it was when its on. Trying turning on the firewall and setting IE and Firefox up in the permissions. Other than that, is he on a network? His router could be blocking port .... ya I forgot the number but there is a designated port for HTTP, you may have to set up port forwarding for his browsers to get it to work.
Your not drunk if you can lie on the floor without holding on
(n.): Something that can be looked down on and approved of at the same time.