Well, I am using a Nitendo Wi-Fi USB Connector. Yesterday I was trying to play Pokemon Pearl with someone, I was able to get in the selection screen where I can chose my opponents name. But when he clicks at me I get Disconnected. When I try to reconnect, It first connects but then it gets disconnected again, it give's me the following error code "52103" Well, I went to Nintendowifi.com and entered this code, I got this Well, it says my internet connection is blocked by a Firewall, Well I turned the Windows XP Firewall off, and I don't have any other Firewall Software installed on my system. Well afther this I tried to re-install my Nintendo Wi-Fi Usb Connecter, afther it has been installed I tried it again, and it does the same thing, I am able to go on wi-fi, chose my opponent and then it get's disconnected again, and afther that I get the same error again. I tried contacting Nintendo, but they won't reply, I even tried asking on there community forum, but no awnsers. I hope you guys know the awnser. Thanks.