Okay. First, here's my quick and dirty way of taking screenshots without a downloaded program.
When you use the view keys in CFS2 to get the image you want to display, hit the "Print Screen" key on your keyboard. (usually next to the scroll lock) Then, open up "Paint" in the accessories category in the start menu. When you open MS Paint, press and hold the CTRL key and press "V." This should display the image. Then save it as a jpeg.
I presume you are using the stock coastlines, correct?