So I was able to play aroudn with the ds and for ebook software. DSlibris, dsreader, etc. I have no problem utilizing txt files, but what I ran into was being able to use DR. Seuss EPUB files. DSlibris uses these files but everything is completely blank. However on my NOOK they work WONDERFULLY. Tried to convert them to txt files and use dsreader, and that failed as well. If anyone has any advice, I would appreciate it. My son would love to read these books on his DS (instead of my nook.. ya know). Thanks!