Why won't animated images work as a desktop backgrounds?

i have an windows XP and i used to be able to put animated images as the background, i don't know what happened but it wont work now, the image won't even show up. please help!|||hi blahblah, if you had it once then you should be ablt to get it agasin so let's restore your system back to and earlier time hit start%26gt;programs%26gt;accessories%26gt;system tools scrol down to system restore there you will see a calender hit the first lit number to your left your system will restore then reboot. if it has been too long since you have lost it then hit start%26gt;settings%26gt;control panel hit the display here you can set up your computer to have moving pictures like an aquirum with fish swimming but i had to remove it cause in the middle of the night was hearing noises and it was that wallpaper had the sound like bubbles and so it was disturbing to hear about four in the morning lol good luck hope i was helpful to you