Hi, I am kind of new to ebooks, just got my PRS 900 about a month ago and just downloaded Calibre last week. So far I am loving both and trying to figure out how things work. Here's my problem. I have books on my reader but not in Calibre, since I got the reader first. I try to add them to Calibre and they are not moving. When I do "add books" I get a sub menu asking about directories. So how do I get books from the reader into Calibre so that I can organize, tag them, get metadata etc.?