I asked a friend to send me a DVD with a bunch of vacation photos. He sent a DVD containing a folder named iPhoto library. It contains folders named database, masters, previews, and thumbnails. I am pretty good with computer applications, or so I like to think, so I thought I could figure it out. It turns out he is entirely unable to explain how I can use these files. I happen to be on a Mac and do have iPhoto, I just never use it. I am unable to get iPhoto to engage with any of the stuff he sent. I just wanted all the images in a folder, but he can't understand what that even means, and can't suggest how to accomplish it. Any iPhoto users here who can offer some thoughts?