The type in this number in Primary DNS 204.045.029.054
then click on OKand save. You dont need to test connection
turn on you dsi. Click on the link for the poke you want to download, and keep thewindowthat pops up open. Go into the pokecenter in your game, second floor, the person next to the globe. Pick trade and GTS. The pokemon will drop into your box.
Then dontforget to change your DNS settings back to auto-obtain DNS yes.