I believe most people have given up on trying to do this, but I figured I would at least give it a shot. I started by taking a blank picture (with my thumb over the camera), and transferring it to my computer. I then used a program called Exifer to export the EXIF data from the picture into a .exi file. I found a random picture on Google, fixed it up in Photoshop to be 640x480 and 72DPI, and exported it as a JPG. I opened the picture in Exifer and imported the EXIF data from the DSi photo into this photo. The one noticeable downside to this is that the thumbnail is replaced with the DSi photo's thumbnail (in this case, a black thumbnail). Putting this new photo on my DSi and starting it up obviously did not work out too well. The good news is that I was at least able to get the DSi to recognize the picture, though it would just say "Cannot Display Image" in a gray square. I've heard of people getting this far, if not further, so I was wondering if anyone would have anything to contribute to this.