Here is a link to a great article with pictures.(http://www.simplehelp.net/2010/04/03/how-to-take-a-screenshot-of-your-ipad/)
Basically it is a two step process. Take the screenshot, then move it off the ipad.
Steps 1 – Take the Screenshot:
when you setup the screen you want to capture,holdingdown the power, while doing that click on the “iPad Button”. (theonly button on the face of the device). Thiswill copy the screen into the photo application
Step 2 – Getting the image office:
You can either email it off, orhook up youripad to itunes and sync.