There is already a thread describing step by step how to do this....they even show pictures (http://www.avic411.com/forum/viewtopic.php?t=8134) . The basic process is this:
1. Create a folder on your desktop called PICTURES
2. Put your D3 background jpegs in that folder...put no more than 20 pics, size is 500x240 pixels
3. Create a second folder on your desktop called Dummy Text
4. Fill that folder with a couple of files...they can be anything as long as they are NOT music files (mp3, AAC, etc). I used an executable file of some random program. Make sure your files in this folder t