Editing Photo Projects in Photoshop CS3

When a project only has a single page, Photoshop Elements saves it in the Photoshop format (PSD). When a project has multiple pages (up to 30 at a time), it saves the project in the Photo Projects format (PSE). If you have Photoshop CS3 and Photoshop Elements 6 installed on the same computer, you can use Photoshop CS3 to edit single page projects and files using the Photoshop PSD file format. You can launch Photoshop CS3 directly from Photoshop Elements in the Organizer or from Windows Explorer using the Open with command.