imconfused

i have a problem with warcraft, and im not sure if this relates to my ISP or what. my problem started a couple months ago when i got a new computer. i got my new computer and set up my internet connection through a wireless router.. DLINK 624. I then discovered that I could not host games in Warcraft III. However, on my original computer, which was hardwired to the router, I was able to host games. Seeing that I could not host games on my new computer, I jumped to configure my router. It took a while, but with help from DLINK i got it sorted out. Then, a strange thing happened. I can join and host games for everyone that I have ever tried on battle.net, except my best friend. This really sucked, because we used to play a lot of games before I got my new computer. We have both been trying to reconfigure our routers, set static ips (we have tried everything) for about a month and half. I've called my router company, blizzard entertainment, and my ISP about 100 times. No one knows what to do. My friend and I have the same ISP, charter. However, charter said that the fact that we had the same ISP, in the same town, would not make a difference. People have told us to try 'pinging' each other's ips, but we get a 'request timed out.' anyway, it's a strange situation because we can both join/host everyone else's AT games. neither of us can host/join each others AT games. it's really aggrivating because no one knows what to tell us. charter says that they don't block internal traffic, they don't block port 6112, so basically they say that the problem is not their fault. we know its not our routers, we know its not the actual game server, so we are almost positive it is charter. however, we have no idea how to fix it, and neither does charter. does anyone have any suggestions? thanks

i have a problem with charter, and im not sure if this relates to ports. my problem started a couple months ago when i got a new computer. i got my new computer and set up my internet connection through a wireless router.. DLINK 624. I then discovered that I could not host games in Warcraft III. However, on my original computer, which was hardwired to the router, I was able to host games. Seeing that I could not host games on my new computer, I jumped to configure my router. It took a while, but with help from DLINK i got it sorted out. Then, a strange thing happened. I can join and host games for everyone that I have ever tried on battle.net, except my best friend. This really sucked, because we used to play a lot of games before I got my new computer. We have both been trying to reconfigure our routers, set static ips (we have tried everything) for about a month and half. I've called my router company, blizzard entertainment, and my ISP about 100 times. No one knows what to do. My friend and I have the same ISP, charter. However, charter said that the fact that we had the same ISP, in the same town, would not make a difference. People have told us to try 'pinging' each other's ips, but we get a 'request timed out.' anyway, it's a strange situation because we can both join/host everyone else's AT games. neither of us can host/join each others AT games. it's really aggrivating because no one knows what to tell us. charter says that they don't block internal traffic, they don't block port 6112, so basically they say that the problem is not their fault. we know its not our routers, we know its not the actual game server, so we are almost positive it is charter. however, we have no idea how to fix it, and neither does charter. does anyone have any suggestions? thanks