Windows 7 supports lots of cool keyboard shortcuts, but they're not always obvious. Sure, you can find the key combo in the menu, but to make it easier for you to remember, you can also enable underlining in the menus. When this option is turned on, the menu command name will show an underscore on the letter that is combined with the CTRL key in the shortcut. To enable the feature, you need to go to do the following:
Click Start, then Control Panel
Open the Ease of Access applet
Go to Change how your keyboard works
Under "Make it easier to use keyboard shortcuts," check the box labeled Un