Instructions
Push "Alt" and the "Print Screen" button at the top of your keyboard. On most keyboards, it's immediately to the right of "F12." It might be abbreviated as "PRTSC."
Press "ALT" and "Tab" to exit "Ragnarok Online" without quitting.
Open an image editing program, such as Adobe Photoshop or GIMP. If you don't have one of these programs, you can also use "Paint," which comes pre-installed with all versions of "Windows."
Push "CTRL" and "V" to paste the screenshot into your image editing software. Click "File" and then "Save" to save it to your hard drive.