I have a bunch of pictures in a folder and when I double-click the picture, it opens in Preview. But if I hit the right arrow, it won't go to the next picture in the folder. Is there any way to set this up like in Windows? I thought of using iPhoto but I only use galleries in iPhoto for my personal pictures. This would be for an assortment of photos collected from the web (photos of Michael Jordan, Steve Jobs, Radiohead, funny pictures, etc.).