i went to port forwording it was to long just goto your networks find your IP and goto internet explorer or what ever you use for internet and type http://<ip>
like this
http://255.255.255.0 (just a example)
then it should ask you for your username and pass usualy just
username: admin
password: admin
then you can do what ever you want in there i dont know what after that people have diffrent routers just find some forwording port setings OR click aplication and gaming and then type game- then like port 27015 for start then 27016 for end next put both then in the next one put any # you want to be your ip then select enable thats how you do it for my router hope that helps a lil :)