Warning: MAKE A "DSReader" FOLDER ON THE ROOT OF YOUR CARD FIRST!
If the folder is not present, DSReader will create the folder itself. On my Supercard miniSD, this corrupted my card and I had to restore the data from my backups.
If you create the folder yourself however, it's a really cool program that's worth checking out. The ability to use fonts I normally use throughout Windows is very nice, and the ability to change font sizes on the fly is also great. My only wish is that the scrolling could be made in smaller increments than one page. For instance, with Moonshell you can just scroll one line at a time, whereas with DSReader you must scroll one page at a time.