How to Capture a Screen Shot with Mac OS X

The Mac OS X has several options for Screen capture. The capture process will allow for saving (capturing) the whole desktop or individual items on the screen.

To capture the entire desktop:

• Press the keys: Command + Shift + 3. This will save the capture in a PNG File on the desktop. This file can be opened using the application called
  Preview.

To capture the entire desktop without saving the PNG file to the desktop:

• Press the keys Command + Control + Shift + 3. This will save the screen shot to your clipboard so you can paste it in to another program.

To capture a portion of the desktop or a single item on the desktop:

• Press the keys Command + Shift + 4. This will change the curser to a cross shaped item and will allow you to draw around the item you want to capture. After selecting the area you want, release the mouse button and the item will be saved to the Desktop in a PNG file. (If you are using Mac OS X 10.3 or earlier the item is saved as a PDF file.

To capture a specific application window:

• Press the Command + Shift + 4, then press the Space Bar.
  This will change the cursor to a camera. As you move around the desktop, stop on an application. This will cause the application to become highlighted. With the window highlighted that you want to capture, press the mouse button. This will capture this application window only. The entire desktop does not need to be seen to do this.
  You will find this captured item on the desktop as a PNG File. (If you are using Mac OS X 10.3 or earlier the item is saved as a PDF file.)

Note: you can capture to the Clipboard instead of saving to the desktop by pressing the Control key during the last two commands described above.

How to Change your Screen Saver in Windows 7

Windows includes several different options for screen savers within the OS. You also have the choice to download and install a custom screen saver as an alternative to the default options. To change or modify the screen saver settings, you can access the control panel in two ways:

1. Click on the Start button. Select Control Panel. In the search box, type in “screen saver”.  In the results list, choose “Change screen saver”.

2. Click on the Start button. Select Control Panel. Find the Personalization icon. In the menu, choose the Screen Saver option at the bottom.

The Screen Saver Settings window has basic functions to customize the system’s default screen savers. If you click “Settings” to the right of the currently selected screen saver, you can adjust the features if they are available. To install a third-party screen saver, follow the manufacturer’s instructions.

IMPORTANT: Use only screen savers from legitimate sources. These programs commonly carry viruses, adware and other malware that can affect your system.

Reference:

CNET: Free & Shareware Screen Savers
http://bit.ly/aSy51a

Microsoft Support
http://bit.ly/cnnrTL