Don't worry Bill, I'm only 4 years behind you, now in my 80th year, ugh.
I think you are working with Windows 7 if I remember correctly. If so, when you have downloaded the Radio Sounds from the Vstep website, you should see the Start screen. As I mentioned, then click on the "Windows" symbol, bottom left of screen, see my picture. Then click on "All programs" and scroll down to "ShipSimulator2008", click on that and then you will see another list above the "Windows" symbol, again on the left of your screen. one of the items showing should be "Radio sounds", click on that and you should then see "Select new radio sounds". Click on that and then instructions will appear for you to choose from 9 differing sets of sounds.
Angus.