Taking a screen shot of a window in Mac OS X can be a fun thing to do. Many people do not know how to complete this task. Following a couple simple steps can have you on your way in no time. The first thing that you will want to do is get your computer up and running. Once you are on the desktop, you can take a screen shot of it by pressing command-shift-4 and then holding the space bar. You should remember to hold the space bar and not just press it to ensure that the screen shot is captured. Following these simple steps will having you taking screen shots on your computer in no time at all.