for setting wallpaper
Windows 95, 98, NT, XP: Click link of your choice, let the large
image load. Right-click your mouse on image and choose "Set as
wallpaper" or "Set as background"
Windows 3.x: Click link of your choice, let the large image load.
Click the right mouse button, and choose "Save Image As."
Save the file to the c:\windows folder. Open your Control Panel, then
the Desktop. Pull down the selection box under the Wallpaper section
and choose the file you downloaded. Choose Tile or Center, and click
Macintosh: Click link of your choice, let the large image load.
Click and hold your mouse over the image. A menu will pop up. Choose
"Save This Image As," and save it to your desktop. Open the
JPEG in an image-viewing program and choose select all. Then choose
copy from the edit menu. Next go under the apple menu and select Control
Panels, then Desktop Patterns. Go under the Edit menu and choose Paste.
Hit the Set Desktop Pattern button.