Adding purchased epub books to Calibre
As a newcomer to Calibre, using Sony reader via Windows XP, I am trying to add already purchased epub books to Calibre, from my Kobo account. I have previously downloaded them, through Adobe DE, into the Sony reader library.
Calibre FAQ's state that on downloading 'the ebook file will be stored in the folder "My Digital Editions" from where you can add it to Calibre'. Presumably by drag and drop. In my case the "My Digital Editions" folder is empty (nor are the downloaded ebooks in "Downloads").
I wonder in which folder am I likely to find them and/or how can I ensure that in future the books will be stored in the "My Digital Editions" folder. Elementary question I guess, and maybe one which should be addressed to Adobe, but other Calibre users may have had the same problem.
Any ideas please.