In most cases, you can do this directly in System Preferences.
From the Apple menu, choose System Preferences.
In the window, click Desktop & Screen Saver, then click the Desktop tab to display just the desktop preferences.
If you want to use a photo from your iPhoto
Library, select "iPhoto" or "Library" in the left pane. (It may take a minute or two for the option to appear).
Click the down arrow, if needed, to select from a list of Events or Albums.
In the right pane, click any thumbnail to place the image on the desktop.
Once finished, you can close the System Preferences window.If you continue to have questions on this topic, just reply back to this discussion prior to rating
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