Can I just suggest that you should be able to save images from SEAX by right-clicking on the image and choosing 'save as'. If you save it as ***.jpg it will save it as a jpeg.
Or, if all else fails, press "print screen" (which is probably just to the right of F12) and then open up a Word document or a viewer like Irfanview, paste it in, crop it if necessary, and save it.
Scrabble