I'm trying to download an eBook from the public library. I have Acrobat 8 Reader but apparently I still need to download Digital Editions. I go to the site and click the "Install" button. The Adobe Digital Editions Installer pops up with the message "Press yes to install Adobe Digital Editions". I press "yes" and it starts to progress. When it finishes the installation the button changed to Launch Digital Editions. When I press the button to launch digital editions, nothing happen at all. I cleared the cache and repeated the process several time and every time I encounter the same problem. I am using Vista premium home edition.