Although my name might suggest otherwise, i am not itallian

I just love italian food, long story.
The reason why it isn't showing up is because a firewall is blocking it.
First of all create a exception in your windows firewall for your port you set in your settings.
For windows Vista/ Windows 7:
http://windows.microsoft.com/en-us/windows-vista/open-a-port-in-windows-firewall
For Windows XP:
http://support.microsoft.com/kb/308127
Next check your system for any virus scanners, they usually also include a firewall, search Google how to open a port on that firewall.
Also did you follow the guide part about opening a port on your router properly?