Click here -->datelcustomerservice.com

All of this info is on that site:

Downloading New Power Saves to your PC:
Verify that you're region settings are correct.
Click the "options" button at the top of the PC software.
Click on "GameSaves"
Set "Online Saves Filter" to the proper region. (US)
Click on the "OK" button to save the settings.
Click the "Saves-Web" button.
(Located at the top right side of the software.)
Click the "Power Saves" button.
(Located on the left side of the software; just below "Rip-DVD")
Choose the letter that begins the title of the game you wish to downlad a save for.
(EX: Legend of Zelda: Twilight Princess can be found by clicking the letter "L".)
Locate a game you wish to download a save for & click on the title.
Click on the save you wish to download.
Click in the small check box next to "To PC".
(Located at the bottom-left side of the PC software.)
Click "Download"

Copying Save Files From the PC to the SD Card:

Verify that the SD Memory Card is NOT locked / write protected.
(The small sliding tab on the side of the SD card should be in the position closeset to the notched side of the SD card.)
Insert the SD Card into your PC's Media Card slot.
Verify that the software is locating the SD card and is assigning the card the corret drive letter.
Click the "options" button at the top of the PC software.
Under "General Options" locate "Device Drive".
Click the check box next to "Do not search, SD memory is on the following drive:"
Click either the up or down arrows to assign the correct drive letter.
Click the "Saves-PC" button at the top of the software.
Locate the save you wish to copy.
Click on the save name.
Click the "To SD" button at the bottom-left side of the software.

Downloading New Power Saves Directly to your SD Card:

Verify that the SD Memory Card is NOT locked / write protected.
(The small sliding tab on the side of the SD card should be in the position closeset to the notched side of the SD card.)
Insert the SD Card into your PC's Media Card slot.
Verify that the software is locating the SD card and is assigning the card the corret drive letter.
Click the "options" button at the top of the PC software.
Under "General Options" locate "Device Drive".
Click the check box next to "Do not search, SD memory is on the following drive:"
Click either the up or down arrows to assign the correct drive letter.
Click the "Saves-Web" button.
(Located at the top right side of the software.)
Click the "Power Saves" button.
(Located on the left side of the software; just below "Rip-DVD")
Choose the letter that begins the title of the game you wish to downlad a save for.
(EX: Legend of Zelda: Twilight Princess can be found by clicking the letter "L".) Locate a game you wish to download a save for & click on the title.
Click on the save you wish to download.
Click in the small check box next to "To SD".
(Located at the bottom-left side of the PC software.)
Click "Download"
NOTE: you can only have 1 save file at a time for any game stored on the SD card. You will be prompted to overwrite the save file if you attempt to transfer a save file for a game that is already stored on the card.

Copying Saves from the SD card onto the Wii Console:

Be sure the game you wish to copy a save file for has been played at least one time on your Nintendo Wii Console.
(Insert the game disc and allow the preview to fully load in the game channel.)
Insert the SD card containing the save game save data into the SD card slot on the front of the Wii.
With the Wii Remote: Select "Wii Options" from the main menu on your Wii console.
Select "Data Management".
Select "Save Data".
Select "Wii"
Verify that no save data currently exists for the game you wish to transfer save data for.
(Back-up and delete the save currently on your Wii if necessary.)
Point to, and select, the "SD Card" tab at the top of the screen.
Locate the save you would like to copy to the Wii console.
Point to, and select, the save you would like to copy.
Select "Copy"
Once the data has been copied, return to the Main menu and begin your game.
You can also view this unofficial "Quick Tutorial" on YouTube for more information.