Yeah i've tried that, the website it tells you to go on is completely different to the one it's on in the pics. Thx for helping anyway.
It's because your router is different. It doesn't mean you can't do it. It just means that either you didn't take half a minute to look around like the guide said, or your router is a piece of stuff and can't port forward. Just look around until you find something that looks like the picture in step 2B.
You may not be able to find something that looks like 1D, in which case just go to the command prompt and type "ipconfig /all"