I need to read .epub files on Adobe Digital Editions 3.0. Instead whenever I click or double click or right click the file it defaults to Adobe Reader, which rejects it because it does not read .epub files. I can click Browse and then type in Adobe Digital Editions 3.0, but it says, "file not found." It IS there and can even already be up on the screen, so this makes no sense. Is something wrong with the default which should take .epub files to Adobe Digital Editions, not Adobe Reader? How can this be fixed?