If you want to backup your Zelda save do this:
1. Put your SD card in your Wii and turn it on.
2. Go into Wii Options --> Data Management --> Save Data --> Wii
3. Find your Zelda save, click on it, click "Copy", and click Yes
4. Put your SD card in your computer, and copy the "private" folder from the card to a safe place.
5. you can now delete the "private" folder on your SD card.
-- Installing the HomeBrew Channel--
1. Make sure that Zelda has been played at least once and you have saved the game
2. Copy the "private" directory from the "HBC installation" folder and put it on the root of your SD card.
3. Copy "boot.dol" from the "HBC installation" folder and put it on the root of your SD card.
you should now have 2 files in the root of your SD card (boot.dol and the "private" folder)
4. Put your SD card in your Wii and turn it on.
5. Go into Wii Options --> Data Management --> Save Data --> Wii.
7. Find your Zelda save, click on it, click "Erase", and click Yes.
8. Open the SD card and select the "Twilight Hack" save that corresponds to your game region.
9. Click copy and then yes. Now exit out to the main Wii Menu.
Since there are two released versions of Twilight Princess for the USA region, these users must first check the version of their game disc. Take your Zelda disc, flip it over so that the data side is facing you, and look for a small line of text next to the inner edge of the disc, between the raised circle of plastic and the data area. If the text reads "RVL-RZDE-0A-0", you have a v0 game and you should select the TwilightHack0 savegame. If the text reads "RVL-RZDE-0A-2", you have a v2 game and you should select the TwiilghtHack2 savegame. If you do not select the correct version of the save, the game will freeze and
the hack will not work.
10. Insert The Legend of Zelda: Twilight Princess game disc and run the game.
a. If you have the USA version of the game, load the "TwilightHack0" or "TwilightHack2" version of the game as appropriate (see the table above).
b. Otherwise, load the only "Twilight Hack" save game.
11. Once in the game, either walk backwards or talk to the man standing in front of you. Do not do anything else, like opening the inventory or it will freeze you console and you will have to hold the power button for five seconds to reset.
12. The Homebrew Channel installer should now load.
13. follow the steps in the installer.
14. Done. (you have now the HBC on your Wii Menu)
15. you can now delete the boot.dol and the "private" folder on your SD card.