the best is to click the little triangle like eric said, thats what i do. remember that iphoto organizes your photos by the date it thinks they were taken, which is the date it finds in the meta data, or if no date there, i think it uses the creation date or the date you imported it into iphoto. it may seem silly at first, but if you think about it, thats the one way best to organize for the app to find things quickly. also like sky was saying, never ever touch anything in yout iphoto library folder. if you need a pic to go somewhere else, just drag it from the iphoto window to the desktop, and it will make a copy that you can move or do what you will to.