Computer viruses, just like real viruses, are very specific of what targets they will choose. If you download a virus and put it in your SD card, it is highly unlikely that it will do any serious harm on your Wii
Just like how downloading a Windows virus while running a Mac won't do harm, same with the virus and the Wii unless the virus is programmed for the Wii as well.
Me, I'm in the process of making Baby Mario. I just made him, but now I want to make his strikers outfit. Then I'll make recolors. I haven't started on the strikers outfit yet but I'm done with regular Baby Mario.
Well I think the n00b guide is pretty straightforward. It tells you where to place the stages. But if you're using riivolution, you need an .xml to get your hacks working.
Well the first thing you should do is something simpler like just getting one hack into Brawl instead of starting with something more complicated via stage expansion.
Well first, get a common5.pac. Then do what it says on the tutorial - replace what it says.
And to add stages, you must use a code. The pack comes with .gct files that let you use them. But since you're using riivolution, you need the ocarina .xml to use codes.