There are two ways to take a screen shot in Windows Vista. You can press the Print Screen key on your keyboard or you can use the Windows Vista Snipping Tool. Or another cool trick I have found is to hit the print screen key on your keyboard, open the paint program and paste the shot there, then use the snipping tool to get what you want. The reason I do this is because menus and popups do not show up when you use the snipping tool but will be included in the print screen way. I use the snipping tool before saving the shot in paint because it saves me from cropping the image at a later date. Very Sneaky but if you do a lot of screen shots like I do, you will find this trick priceless.
This first video will show you how to use the Windows Vista snipping tool to take a screen shot. It can do some really different screen shots compared to the usual way.
This second video shows you how to use the print screen button in Windows Vista. And it will also show you how to save the shot in the paint program.