To install a skin on your Nintendo DS - M3 Simply, you need to do the following:

• Click the Download button and save the file to your PC.
• Extract the contents of the .zip to a safe location on your PC.
• Connect the MicroSD card from your M3 Simply cartridge to your computer via a card reader.
• (optional) Copy the _system_ folder from the MicroSD card to a safe location on your PC.
• Replace the _system_ folder with the extracted version from the .zip file.
• Return the MicroSD card to your M3 Simply cartridge.

Note: You can only have one skin on your M3 Simply at any one time.