[CentOS] HTTP blocked?

I just installed CentOS 5 and put ZoneMinder on it. Everything seems to
be working fine, except I can't access the web pages from a remote
computer, even if it's on the same LAN. If I lynx to the webpage from the
server itself the web page comes up. I checked iptables and there doesn't
seem to be any block there. There is no firewall within my LAN that would
block port 80. Any other ideas?

Thanks