Topic: DS games Don't work online with 3DS

So the thing is my 3DS let's me play dsiware games online but when I want to play my MKDS or my 007 GoldenEye or any other DS game it won't let me play online do you guys know what could be wrong

This very topic came up the other day, actually... it's your internet settings — remember that DS games will only work with a WEP connection. Your 3DS has an option to set up an internet connection for DS games (separate from the main 3DS internet connection); you'll need to do that if you want to play your DS games online.