OK - let's try to make some sense of all this
First - Your system actually has 2 IP addresses.
Address #1 - The Internet IP address is the one the world sees. It is assigned by your ISP and you have no control over it. Just understand it is there, but don't worry about it.
Address #2 is the address your computer has on the LAN. This IP address tells the router where your computer is on the network so it can send information to it. You have control over this IP address
Now Port Forwarding -
A router typically blocks all traffic from coming into the network it controls (your home network) unless you have sent a message out first to that web site. So when you want to go to Yahoo, you send a message out, the router remembers it and when Yahoo answers back, the router lets the traffic in and you see the web page.
But when you are gaming, there are times that outside computers must call you. If the router is not set up to allow this, the game does not work. That is what port forwarding is about.
So the steps we need to take are:
1. establish a fixed IP address for your computer
On you task bar is a network icon. Click on it. It brings up a pop up.
Click on the support tab
Now you see the IP address, subnet mask and default gateway.
Write these numbers down.
Click on the details button
Find your DNS servers
Write those addresses down
Once we know these numbers we can assign our address, Close the details pop up, select the General Tab and click properties. That brings up a new pop up. Highlight Internet Protocol and click on the properties button. Now you see some selections and radio buttons.
Select "Use the following IP address"
You can now enter data in the fields
Decide your fixed IP address this way
The IP address for your comp was (example) 192.168.0.100
The default gateway address was (example) 192.168.0.1
We want to pick an IP address that will not conflict with your router, so enter an address of (example)192.168.0.10 (Match the first 3 groups exactly. the last group is your unique address. Most home routers assign between 100 and 150. Using a number at least 50 addresses away from the router should keep conflicts to a minimum
Enter a subnet mask of 255.255.255.0
Enter the default gateway that you wrote down
Now click on the Use the following DNS server addresses and enter the addresses you wrote down
Click OK
Click OK again
Now verify you can get on the Internet
OK - now we have a fixed IP address and we can port forward
If you cannot, keep at it until you can. You can always get back to where you were by going back to the auto selections
Get the port numbers you need to forward. You can get them from the FAQs at the games web site
Now we access your router
Get out the manual and see how to use your browser to access the setup pages
you'll type something like 192.168.0.1 into your browsers address bar. That gets you a pop up. Enter the user name and password from the manual. It's usually something like admin admin
Once in the router setup pages go to the advanced section
Find the port forwarding section
Using the router manual enter the port or range of ports you want to forward
Enter the IP address you gave your computer
save your settings
restart the router
check out your game
Good Luck