This article will show you how you can get a moving wallpaper on windows 7, also known as dreamscene!
Heres an example:


Ok, so heres how to do it!

We need the dreamscene activator Download
Right click and select run as administrator
Click enable dreamscene
Then close

OK, so now we need a mp4 file to set as background, The best place to go is dreamscene.org!
Now you have downloaded the file, just right click it and click set as wallpaper!
Warning: Dreamscene does use a lot of resources, so may slow down you computer!
Download