Thank you everyone because I now feel there is enough information for me to finally learn to do a 'screen shot'.
Just so you know how I have been surviving without this knowledge (and something that makes my daughter giggle) -
I keep my digital camera handy, take a photo of the screen, quickly upload the picture to my computer, edit, then upload to the site where the 'screen shot' is needed. Well...it worked for me!
I will study this thread so I can learn to do it properly over the weekend.