OK, somewhere on your desk there should be something that looks like a TV. If you're reading this it'll be right in front of you. Move your hand to your right (if you're left handed you will have to reverse these instructions) and grab the plastic thing with the two buttons. Now, keeping an eye on the thing that looks like a TV, move the little pointer you see on it to something that looks like an actual cardboard folder on the screen. Any one of these will do. Press the button on the plastic thing twice. A square will pop up. DO NOT PANIC. This is normal. At the top of this square, click on the word tools. Now the words Folder Options. Now the words File Types. Now find the one that says NDS file (the files are in
alphabetical order). OK? Click on the words NDS file. It will go dark blue. Click delete. And relax.