ON A PC (Windows XP or 2000)
Pressing the Print Screen key captures a screenshot of the entire desktop area, and places it in the clipboard. Pressing the combination of Alt-Print Screen captures only the current active window. By default, Windows does not save the screenshot to an image file; the user is required to paste the image into a separate imaging program (such as Microsoft Paint which is built-in) for saving.

Keep the window open showing the banner you have posted and press Alt + Print Scrn (button on your keyboard found near the function keys) to capture the active window.

(1) Select Start > Programs > Accessories > Paint. The Paint application opens. (or use your preferred Graphics Program like Adobe Photoshop, Corel Draw etc.)
(2) Press Ctrl + V to paste the screenshot into Paint. If you receive a message that says: "The image in the clipboard is larger than the bitmap. Would you like the bitmap enlarged?", click Yes.
(3) Select File > Save As. The Save As dialog opens.
(4) In the Save in field, select a location to save the file, such as your Desktop.
(5) In the File name field, type in a name for the file.
(6) In the Save as type field, select .gif or .jpg.
(7) Click Save.