ok, I don't use Photoshop, but have been asked to replace a background layer with another image. Try as I might and search the help articles, I cannot get an answer. So, how is this done? Thanks in advance.
If it is indeed a layer just drag and drop the new image to the Layers palette just above the background layer. If you need to remove a background from an image check out the magic eraser which will let you erase one color while preserving adjacent colors.