how exectly do you open a router port?
uhh,
that depends on your router... basically you got webbased configuration page on your router... you should be able to access it via any browser. its adress is your standardgateway, use ipconfig to dertermine its ip if you are not sure...
once you entered the configuration module you can achieve the "open port" in at least two ways:
1. Do a port redirection to your PCs IP adress
2. Open up the port in the routers firewall
you should have a look into the documentation of your router...