buildzion.com

Darrel Chamberlain has some of the most stunning temple images on the web!

His website is now at  http://www.panoramio.com/user/15122
Click on the gallery images to get the full-quality wallpaper images.

You can download his free LDS Temple Screensaver here:  LDSTempleScreenSaver

Here is an image from newsroom.lds.org that is sized appropriately to be used as a desktop background/wallpaper:

The Twelve Apostles

We recommend the "Print" quality image. 

Special LDS.org Wallpaper Collection
We have a special collection of newsroom.lds.org images that have been adjusted to fit as desktop backgrounds:
TheTestaments
Legacy
SacredGrove
Carthage
Conference
SLTempleNight
TempleSquareChristmas
SLTempleSpring
SLTempleAutumn

We are making this collection available by email request only. We do not use your email address for any other purpose like spam or a mailing list. These images are subject to the newsroom.lds.org terms of use. Please use our Contact Us page to request this special wallpaper collection to your email address.

DeseretBook.com has a great screensaver:
deseretbook.com/pages/screensavers

For more LDS temple wallpaper:
www.ldschurchtemples.com/galleries
ldscalendar.com/downloads.htm

We also have Scenic Desktop Backgrounds