@ Doom
If you mean a modchip with magic then that's not the kind of magic I'd like to cast.... If it's a neat loader trick or sth. like that than I'd be interested....
You need a copy of an early run of Twilight Princess, and an SD card, but that's it. No opening cases.
Nope, unmodded Wiis, although Nintendo can pretty easily catch you when their records of downloaded VC games don't match your console. Then they could in theory ban your console from online. To my knowledge, this has never been done. You can also use it to run homebrew and emulators (plus games that aren't on the VC yet)
I don't have TP, so I've been trying to mooch one off of my friends ever since this capability was unlocked. I've never done it before, but this looks like a good guide:
http://gbatemp.net/index.php?showtopic=83479