Okay - so I am not COMPLETELY braindead - just sort of....
I was able to successfully use the ADE to copy the book from the computer to the PE, but it isn't in my Library where I see all my other books. But when I click on and open the PE from the ADE window, it shows that it is there.
I guess I need a lesson on file structure within the PE. I tried to search for the file, but it just "sits" there and does nothing. I also notice when I open the PE in the ADE window that some of the documents I thought I didn't save are there, as well.
Thank you so much for all the help you have given me so far! I was so close to sending this thing back before I found this 'forum' and the help from Woot.
UPDATE! Brain is alive again!
Once I removed the device from my computer, I found the files. I had completely forgotten that when the PE is connected to the computer, access to the internal storage goes away. Once that comes back, the files are back, as well. I was then able to save the book to my library for easy access.