To capture a screen print, you need to press the Print Screen button on your keyboard. The button name may be abbreviated on the button. Pressing the button captures the whole display on your monitor. To capture an application window only where the window may be less than maximized, pressing Alt + PrintScreen will capture only that application window. This puts the screen capture in the clipboard (the temporary memory area). Then, you need to paste it into an image editor and save it as a .jpg or some other image format file. Paint can be used for this. And, while you have the image displayed in your image editor, you may crop it and save that smaller cutout to further limit the size of the image you'll post in the forum. You can also use your image editor to draw circles or boxes around certain parts of your image or put arrows on it pointing to specific elements and perhaps add text to further enhance the effectiveness of your image in conveying a point in the forum.
