How to authorize my e-reader?

[Hagwind]

I downloaded a book into ADE. My laptop is authorized. I want to be able to read the book on my Nook Color e-reader. Can this be done? How do I do it?

[Hagwind]

I'm the OP -- this is no longer urgent because I managed to authorize my tablet and can read on that, but I still wonder if I can read ADE books on my Nook.