There are probably many people, who may remember that Vista had an effective function called DreamScene. It allows to set video wallpaper in .wmv or .mpeg format as a desktop background. Instead of this Windows 7 has a wallpapers slide show. However DreamScene is not gone away, it was only deactivated and hidden deep within a system. In order to reveal the opportunity to use this function again, one may try a common utility DreamScene Seven.