Configure Fedora 15 Linux to allow access via port 80 from other computers

I am trying to make my home server accessible to the whole web. I have installed Nginx on my Fedora 15 64-bit Linux machine, and it works with localhost but it doesn't work online or allow other computers on the network to access it via the IP address. It keeps coming back with:
Could not connect
I have port forwarding. I have even tried different ports but they all seem to be blocked. What could be wrong? I have a netgear router.
Chain INPUT (policy ACCEPT)
target     prot opt source               destination        
ACCEPT     all  --  anywhere             anywhere            state RELATED,ESTABLISHED
ACCEPT     icmp --  anywhere             anywhere           
ACCEPT     all  --  anywhere             anywhere           
REJECT     all  --  anywhere             anywhere            reject-with icmp-host-    prohibited

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination        
REJECT     all  --  anywhere             anywhere            reject-with icmp-host-    prohibited

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination