Program generates series of images with a seamless transition from one picture to the next. It's completely free, with no splash, and is only 19k. It can optionally stay in memory to automatically fix the transparency if your desktop gets changed or reset. HarmWave is a graphics application that creates seamless tiles for use as Windows wallpaper or web page backgrounds. It can also be used for photo re-touching.
Installation is simple.
Unzip the files. You are done. Just keep all the help files with the executable so Help will work properly. HarmWave is freeware, freely distributable. This tiny utility is yet another screen grabber.