Snag-It is one of those programs that you didn't know that you couldn't do without until you have tried it. It can capture the entire screen or any part of it. Techsmith also produce a program called Camtasia which can be used to make instructional videos as it records whatever happens on the screen.
Ultramon is the premier multi-monitor control utility, giving the user unsurpassed control. Although dual head video cards are supplied with dual monitor software, upgrading to the newest release of Windows tends to render the manufacturer software unusable. Ultramon will return full control back to the user and more besides.