Change your desktop background
The information in this Help topic only applies to Windows 7 Home Basic edition.
Your desktop background (also called wallpaper) can be a digital picture from your personal collection or one that comes with Windows. You can also select a color for your desktop background or use a color to frame your background picture.
To change the desktop background
Click the Start
and then click Control Panel
In the search box, type desktop background, and then click Change desktop background.
Click the picture or color that you want for your desktop background.
If the picture you want to use is not in the list of desktop background pictures, click the Picture location list to view other categories, or click Browse to search for the picture on your computer. When you find the picture you want, double-click it. It will become your desktop background.
In the Picture position list, click an item to crop the picture to fill the screen, fit the picture to the screen, stretch the picture to fit the screen, tile the picture, or center the picture on the screen, and click Save changes.
To make any picture stored on your computer (or a picture that you're currently viewing) your desktop background, right-click the picture, and then click Set as Desktop Background.
If you choose to have a fitted or centered picture as your desktop background, you can also frame the picture with a color background. In the Picture position list, click Fit or Center. Click Change background color, click a color, and then click OK.