My friend bought a book for me for Xmas, and because I dont have the internet, she managed to download it to her PC. Then she copied it to a memory stick for me to transfer to my PC and Sony Reader 505. The first error message I got was that I could not read EPUB files, which I got around by obtaining a copy of Calibre. Now I have an error message telling me I cannot read the book because it is DRM protected. She bought me the book from Waterstones. Is there anuthing I can do to get past the DRM protection ?