yep that was the model number and i used that guide to set up my port forwarding. I have only got 1 static IP, i meant i did it again incase it didn't work. The Port i have set it to is 50000 by the way.
Please confirm that this is correct:

Protocool Type: Lan Port: Public Port: Enable:
TCP 50000 50000 (tick)
UDP 50000 50000 (tick)

(sorry not good at posting links)