Connection Failed

[Graham]

I have tried using  VNC Server test page link  at 
http://www.realvnc.com/support/portforward.html to check for connection but 
get the message:
IP address requesting this webb page is 62.252.64.17

Connecting to port 5900 .....failed

I know I am behind a router and would need port forwarding but a friend 
without a router has tried this and gets exactly the same result. Does he 
need to running a VNC Server? As a newbie can you give me help please.

I am using VNC Free edition v 4.1.2