When you open Adobe Digital Editions (ADE) on your PC does the eDGe show up under All Items? Once the PE is connected to the PC and you open ADE it should detect it and offer to authorize it with your Adobe ID. After DRM is authorized on the eDGe you can get books directly from Barnes and Noble, Kobo, Google e-books etc.
Here is Adobe Digital Editions Help:
http://www.adobe.com/products/digitaleditions/help/
Check out this video from Google:
http://www.youtube.com/watch?v=J3z29...layer_embedded