Feb 18 2012
This is my current favorite wallpaper background for my 27″ iMac from iFixIt. (click on the pic to make it bigger)
If you want to install this as you desktop background, go to System Preferences > Desktop & Screen Saver > Desktop, then click Folder… (in the left panel) and select the folder in which you saved the picture. If the folder is not in the list, click the “+” in the lower left and navigate to the correct folder to add it. Click the picture in the right panel to display it as your desktop background. voila!