Instead, go to any ebook store that sells book in Adobe Digital Editions/Adobe Reader format. Use the Adobe Digital Editions software (free from the Adobe website) to download the book to your PC. Then go into the My Documents - My Digital Editions folder and transfer (by file or email) the PDF/EPUB file to your eDGe and Add to Library.

To keep things smooth, you should use the same email address and password in ebook stores (and in Adobe) as you used to register your eDGe so that your ebooks are easily transferrable.