Normally that would be a helpful reply, but ...
The "port forwarding" is set up on the "Firewall > Virtual Servers" page in the router admin. Thing is, and I have the same problem, no matter what you forward port 80 to, when you connect to port 80 from outside you get the routers web page. I.e even when you have set up port 80 forwarding correctly it doesn't work.
Any help from anyone with ACTUAL EXPERIENCE of configuring port forwarding on Belkin routers SPECIFICALLY would be appreciated!