If your picture and purple background are on separate layers, you can add a drop shadow to the picture layer.
1. Make sure the picture layer is targeted in the layers panel
2. Go to Window>Effects and then in the Effects panel click on Layer Styles and choose Drop Shadows from the drop-down list and select one of the preset effects.
3. Adjust the shadow in the Style Settings dialog that pops up.
4. If you want to readjust the shadow later you can double click on the small FX to the right of the picture layer to bring up the Style Settings dialog.
The two aren't layers. I am not quite sure how to do that. This is something that I created to make a business card in Publisher and then I saved it as a JPEG so that I could edit it with PSE7 . How would I make the purple a layer and then be able to do that with the shadowing??
Here's another way to create the shadow:
With the Rectangular Marquee tool select the picture (minus the purple) and copy/paste it to a new layer.
Select the same area again: Ctrl-click the new layer, or from the menu bar Select > Reselect.
Add a blank layer and fill with black.
On the black layer apply a Gaussian Blur.
Ok....thanks for the alternative. But since I am such a novice user of PSE7, I can make the Layer 1 but am having problems making the Layer 2 What should my exact steps be to make that particular layer?
1. Ctrl-click the Layer 1 thumbnail in the Layers Palette to select just the picture portion. You will see the "marching" ants indicating the selection.
2. Click the Background layer thumbnail to activate it
3. Click the Create New layer icon to add a blank transparent layer between the Background layer and Layer 1. Note that the select is still active.
4. Edit > Fill and select Black from the list.
5. Deselect the selection: Select > Deselect, or Ctrl-D/
5. Filter > Blur > Gaussian Blur and move the slider to get the amount of blur you want.