Things You'll Need
Instructions
Navigate your web browser to the "Moonshell" download page.
Download the "Moonshell" installation package to your local hard drive.
Remove the micro SD card from your Action Replay.
Insert the micro SD card into a USB converter. Plug the converter into your computer's USB slot.
Extract the contents of the "Moonshell" installation package into the root directory of the micro SD card. Use the self-extracting ".exe" version of the installation package if you do not have a program capable of opening ".zip" archives.
Insert the micro SD card into the Action Replay.
Power on the DSi with the Action Replay inserted into the cartridge slot.
Open the "File Browser."
Use the directional pad to navigate through the list of files on the micro SD card. Highlight "Moonshell.NDS" and press "A" to open "Moonshell."