OptiPraise.com, now defunct, was a website
with worship backgrounds.
Download these samples (the first two are Christmas, the second
two are general purpose): click on an image
and the full graphic will fill your screen.
RIGHT click the enlarged image, select something
like "save as" or "save picture
as" to manually save the image to your
hard drive (create a special graphics folder
so you know where you put it!) Then pop it
into your software.