When I choose an image for a background on my curve, it only shows it as a smaller picture with the sky still behind the picture. How can I make the background one giant image?
You're probably using the default AT&T Theme. You need to try a different theme. Go to Options> Theme> and select any of the Dimension Themes. Should fix you right up.
zoom in on the picture & then hit "Set as home screen."
The default AT&T theme leaves a border at the top and bottom of the screen. No amount of zooming in will remove these borders. The only solution is activating a different theme.