Today's Tip: Open a flat version of a layered file (Photoshop CS/CS2/CS3/CS4)

When you want to open a layered file as a flat composite instead, hold down [shift][option] ([Shift][Alt] in Windows) as you open the selected file. Photoshop displays an Adobe Photoshop dialog box that asks, "Read the composite data instead?" Just click OK and your file appears as a flattened version of the layered file.