JonMikal, just use a layer style. Put the photo and it's small white border on it's own layer, above the background layer, then do image, canvas size, click relative, and add some pixels to the entire document, about 50. Then click the layer with your photo, and do layer, layer style, drop shadow, and tinker around with the setting until you get what you want. The layer style is always editable, by double clicking it. It will be a white layer attached to the layer it's affecting. The size variable controls the spread and blur.