What books are you trying to read.
ADE will access .acsm files toi convert them to DRM .epub or .pdf,
or read DRM or non-DRM .epub or .pdf.
I don't think it will read anything else.
For non-DRM books try Calibre (http://calibre-ebook.com/)
and for others try whatever special reader it needs (eg Kindle reader for Amazon books)