Given the multitude of exciting new features Adobe has packed into version 5, last year's release of Photoshop Elements 4 was a rather mundane upgrade to an excellent image editing, organizing, and sharing package. If you didn't upgrade last year, now's the time to do it. The program's Organizer component has always allowed you to create virtual "stacks" of similar photos so they don't take up unnecessary space in the browser window. Version 5 further refines this handy feature: Now the Organizer can analyze the time stamp and visual content of your photos to suggest image stacks automatically. You can also expand stacks to view their full contents right in the main browser, rather than in a discrete window. And there's lots more.