Add or remove background image to the worksheet in Excel 2010

In Microsoft Excel, adding a background image is pretty easy. Before proceeding with the steps, you have to make sure that the exact location of the background image is known. Perform the following steps to add a background image:
1. Click the Page Layout tab, in the Page Setup section, click Background.
2. From the Sheet Background dialog box that appears, navigate to the location of the image file. Once the image file is located, click the image file and then click Insert.

If the worksheet has an image and you need to remove the background image then perform the following to do so:
Click the Page Layout tab, in the Page Setup section, click Delete Background.