Question: Newer Super Mario Bros Wii

[slax65]

Hello guys,

I'd like to play "Newer Super Mario Bros Wii"
It's a fan-made version of the regular NSMBW
To play it I'd have to do it like this:

http://www.newerteam.com/help/ihashomebrew.html

I don't know how Wads and a SD-card works with Dolphin :/
Could someone please read this quick installation guide and tell me how I can do this with Dolphin?