Just successfully did it myself. Here's what you have to do. Don't need the Homebrew Channel or anything to do this
http://www.mediafire.com/?9jdbd1xwmi6gw
1. Download the Xenoblade Save Tools.zip
2. Copy your PAL Xenoblade save file from a Wii to your SD card.
3. Find it in your SD card. From the root click on Private and it should go to a folder named Wii then a folder named Title If you've done this before sending Wii saves to the SD you'll have a ton of folders with 4 letter codes on them. The one for Xenoblade is SX4P.
4. While you're here create a second folder next to it called SX4E. This is the one we'll be using for the converted save file when we're done.
5. Copy the Xenoblade file in the SX4P folder (should be titled data.bin) into the folder called Pack Save that you extracted from the link above.
6. Run the batch file in that folder called "_extract data.bin." This will turn your data.bin into 3 files called monado01, monado02 and monado03. These are the 3 corresponding save files to your PAL save. They should all be in the same folder as the one you're currently in
7. Now run the batch file called "_pack NTSC data.bin" and it'll create another folder called private and it has the same set of folders found on your SD card.
8. Follow that all the way until you find the new data.bin which is now your Xenoblade save file converted to NTSC. Copy and paste that back to your SD card, but this time in the SX4E folder that you created.
9. Put the SD card back in your Wii and copy the new NTSC save from your SD card to your Wii
If it all worked correctly your save should now work with the US version of Xenoblade!
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