Hello. I've been having trouble with my wifi for my DSi. I try playing MKDS and acww online, but everytime I do, I get the error code 86420. I called Nintendo about it and told me to port foward and do an firmware update. They told me to call the company who made the wireless router I got which is Belkin. I called them and they told them what Nintendo told me about the port fowarding and firmware update. They told me that the was no need for a firmware update, because my wireless router was already up-to-date. Then they told me that what gaming device that I wanted to play wirelessly and I told the the DSi. They walkthrough it to me but I'm still getting the error code. If there is anyone that could help me on this situation, I would be most grateful.