This is a very brief instructable that shows how to take screenshots on your iPhone. I have only tested this on my iPhone 3g, but I've heard that it works for others. I have not tried it with an iPod Touch.
Step 1: Taking Screenshots
This is extremely simple. All you have to do is hold down the Home/Menu button, then press the power button at the top. The pictures save in the default photos folder (same place where your photos save after you take a photo).
This is a lot easier than jailbreaking your iPhone and installing a screenshot application (although I highly recommend jailbreaking your iPhone).
Happy screenshot-ing! (or whatever you wanna call it)
The images I used in this instructable are not my property and I have no claim or sense of ownership over them. I used them merely for instructional and informational purposes.