From DreamScene XP:
With DreamScene XP, you can use a video as your desktop background, the same way you would have used a regular picture. DreamScene XP is designed for Windows XP customers to extend Windows features to make using your computer more fun. Change your desktop background to a video movie, which runs in a continuous loop to make your desktop come to life.
Personal Expression and the ability to share our inner thoughts and styles with others or just with our computer screen gives one a sense of individuality and the ability to easily show off our creative side without being a pc programming genius. The wonderment and fantasy of being able to change and express what we display with a DreamScene XP has opened up a whole world of virtual reality with a personal twist.