I am trying to figure out if I can convert my nook books so that I can access them on my Kindle Paperwhite. I have been searching everywhere but I cannot figure it out. I downloaded the nook app for windows and downloaded a few of the books. I was able to find the folder where they are stored but they are not .epub files so I'm at a loss at what I am supposed to do now. I tried installing Nook for PC but was unable to login.