Stop users from changing desktop wallpaper and screen saver
1st Desktop Guard lets you prevent your desktop icons from getting rearranged, stop users from changing desktop wallpaper and screen saver, secure your public access computers, save, restore, manage and lock desktop layouts.

Wallpaper Slideshow Pro is a great utility for displaying your favorite images as your desktop wallpaper. Wallpaper Slideshow offers you complete control of your wallpaper collection. It has lots of options that allows you customize the way wallpapers are created, for example for each image you can decide whether it must be automatically resized to fit the screen, centered, tiled or spanned across your multiple monitors. It also possible to overlay a calendar, text or info taken from exif/iptc/xmp fields on your wallpapers. A new wallpaper can be set on windows startup, at regular intervals or manually when you press a hotkey or double click on its icon. Wallpaper Slideshow is simple to use, intuitive and complete with full context-sensitive help.