Hey, you have the same router as me! That's awesome! Ok here is a step by step guide on how to port forward you router. However, I have some changes to make on it. When you get to step 5, go to "Firewall" instead of "Virtual Server." When you get to Firewall, make it look exactly like this. Make sure you put YOUR ip address where I have mine and remember the port range is 6881 to 6999. After you fill in everything, just click apply and your done. For your XP Firewall, in my opinion, I would just turn it off. It really is a weak firewall and your router has a better one, so it is useless. Hope I could help.