Firefox

1. Right-click the Internet image you have found, to bring up the shortcut menu shown in Figure 1. There are two ways to go from here. For the first way, go on to step 2; for the second way, go on to step 3.

 Figure 1

Figure 1

2. Click on "Set as Desktop Background", and Figure 2 pops up. Choose if you want to center, tile, or stretch the picture, and what you want the background color to be if the picture is centered. Once the preview looks as desired press "Set as Desktop Background" and you're finished.

 Figure 2

Figure 2

3. Click on "Save Image As..." and save the image wherever you want to. Once it's saved, exit or minimize all the windows until you are at the desktop, and right-click on any icon-free area to bring up figure 3.

 Figure 3

Figure 3

4. Click on "Properties" and click on the "Desktop" tag to bring up figure 4. Click on the "Browse..." button and find the picture you saved in step 3. Once the picture is selected, choose if you want to center, tile, or stretch the picture, and what you want the background color to be if the picture is centered. Lastly, click "OK" and you're finished.

 Figure 4

Figure 4