Originally posted by simonsayers
How would I go about getting back my original 80 something IP adress then?
The only way of assigning the original IP address to your PC is by removing your wireless network altogether, and connecting your modem directly to your PC. However, this would mean that your other computer's won't be able to connect to the Internet, or communicate between each other.
Or alternatively, getting a seperate Internet connection (seperate line) for each PC, thereby giving each PC it's own external IP address. But this is costly, and pointless as your wireless network is supposed to allow multiple PCs to share one Internet connection (to share one Internet connection or in other words, one external IP address).
As already mentioned, to get around this, you need to use port forwarding in your router's settings. It's there for situations like this. It can be a pain at times, and you need to know what ports applications and programs require, and where to forward it to. In your case, you need to forward the BF2 ports to your PC's IP Address.
This is the only safe way, without exposing all ports on the LAN to external clients, and without having to purchase more than one Internet connection.