From Steve Murphy:
AWC is designed to be a one stop shop for displaying images on your desktop wallpaper.You can simply display you photos on your Desktop or create spectacular wallpapers by merging your images with the background of your choice using powerful alpha-blended fades. A configurable timer automatically changes the desktop to display your pictures in the way that you want to see them. Just select one or more directories containing picture files and AWC will create a list of all the images contained in them, randomly select one and format it using a combination of the many available options. The displayed image can be resized for the best fit to the screen, optionally maintaining its aspect ratio, or displayed at its actual size. You are not limited to the centre of the screen when displaying a picture, as is usually the case in windows, but can display the picture in any of the four corners of the screen or centred on one of the edges. Additionally you can specify that images should always be tiled: again you can specify how the tiles are laid out on the screen rather than simply going from the top left. The real power of AWC lies in the fact that here are lots of options for tweaking the picture to ensure that you get the best possible result on your system. Just open the Preferences screen from the File menu and you can set exactly how you want your wallpaper to appear. Key Features: Select files from multiple directories and their subdirectories; Display file comments; Multiple resizing options: Full Screen, Best Fit and Worst Fit; Alpha blended fade effects for seamless merging of the wallpaper and background; Theme management; Multiple monitor support displays different wallpaper on each monitor; Link to Google Earth; Tile a background image onto the screen before displaying the wallpaper on top of it; Images supported: *.jpg;*.jpeg;*.gif;*.bmp;*.png;*.rle;*.tga;*.pcx; Camera RAW; Change Windows 7 Logon Screen background image.