I know how to do this!
First you need:
An SD Card
Homebrew Channel
Gecko OS
A wii. o.o
(For Like, Weapons, EXP, Money, BEXP, Turns, Blessed Weapons, etc...)
http://www.geckocodes.org/
If you mean hacking Mugs, you might want to ask on their forums. They are all experts o.o
EDIT: http://wiibrew.org/wiki/GeckoOS, this site is helpful.
Goldie doesn't do that much, he just changes character alliance. o.o
EDITT: I didn't mean to Necro Post! D: I forgot to look at the dates before I posted. :( I'm so sorry :(