Well, you should have already had a "Sceenshots" folder in your SilkRoad directory. Since you didn't, I don't know what to tell you. Except that you can download a SS and video taker called Fraps. (
http://www.fraps.com) If you have a fairly good computer you could run it pretty well and take SS's to a directory of your choice with a button of your choice. You can even take 30 second video if you want with the free version. Hope that helps.