Unfortunately, there is no option to save the simulation directly as an image. You can save it only as a .mod, .vib or .rot file. However, you can use the Print Screen key to save it as image. First, press the Show/Hide main menu icon to display the full graphic and then press the Print Screen key. After that, go to Start, type Paint and open the utility. Press Ctrl + V key combination to paste the image and save the file as PNG, JPEG, GIF or BMP. If you're using Windows 7 or later, you can use Snipping Tool.