Vista - Desktop Background Wallpaper

I have a problem that when I try to center my wall paper no matter the side it always snaps the longest side to the edge of the screen and distorts the image instead of (like XP) keeping it the real size.

Right click on desktop>click personalize

Personalization>desktop background

Oh i guess I worded my problem wrong, I HAVE it set on center, BUT it stretches when, like XP, I want it to be ACTUAL size. -_-"

Try using a free graphics app. Both Irfanview and Photofiltre will set the current image as wallpaper. A trick you can do is create a background in your screen res and copy paste the image into it. Then position the image on the background so that the space where the background shows through is hidden by the taskbar. Saves resizing to an image that isn't a perfect aspect ratio "fit" for your screen res.