I just got a new widescreen laptop today, and I am having a lot of trouble using my pictures as my background. I have tried going into the properties and switching between the stretch, tile, and center, and none work right.
Stretch - really stretches the picture and it looks weird
Tile - only shows the upper left hand corner of the picture
Center - shows only the center of the picture

On my other laptop when I put Center, the WHOLE picture centers itself on the screen and leaves a blank space around it where the picture is not big enough to fit. This is what I am trying to do, but it is not working.

What should I do?