Wallpaper stretching+Vista
 

I've upgraded to vista 64bit a few days ago and I just noticed that all my wallpapers seem to be stretched out. All the wallpapers were placed correctly when I was using my old computer. At the moment even when I go into preferences and change the wallpaper from centered to stretched the picture doesn't change. I'm using a samsung 2253 and a 9800gtx+ if that helps. Please and thank you for anyone that can help