Type: CycloDS + Windows
Using this app/homebrew you can dump your NDS games for use with the CycloDS Evolution.
The Wi-Fi method requires a Windows PC and a wireless router, and it dumps the game to your PC hard drive.
The 3-in-1 method requires only a 3-in-1, and it dumps the game directly to your CycloDS' microSD card.
You only need to download one of these files - so choose how you plan to dump your games and then download the correct tool to do the job ;-)
NOTE: Make sure you download the correct version if you are using the 3-in-1 backup method. One is for the original cart, one is for the Plus version. Both carts look identical on the outside. Ask in the comments if you're not sure which one you have.