"To forward ports, go to the Web Interface at »10.0.0.1 and click the Advanced Setup in upper left corner, then click on Network Address Port Translation (NAPT) in the left frame. Then click on Configure NAPT Servers, enter the protocol, port, etc. that is specified for your program, then the IP of your computer. If you have a home network with multiple computers it is infinitely easier to give each computer a static local IP in the Network control panel so you can be sure you are forwarding the port to the correct computer."
From click here
Hope that is of some help?