Mary,

If you're looking to hide the button so it can't be picked again, try this:

   $('.RadioButtonOne').click(function HideStuff() { 
     var choice = $('#q16 input:checked').val();
         if (choice == 1){
        $('#Field17-0').hide('slow');
        $('#Field17-1').show('slow');
        $('#Field17-2').show('slow');
    }
    else if (choice == 2){
        $('#Field17-1').hide('slow');
        $('#Field17-0').show('slow'); 
        $('#Field17-2').show('slow');
      }
    else if (choice == 3){
        $('#Field17-2').hide('slow');
        $('#Field17-1').show('slow');
        $('#Field17-0').show('slow');
         }
         });

Ok, the "choices" are the value fields for the selections.  In the forms editor, set the choices to have values (I just picked 1, 2, and 3 for the three fields).  Then, assign a name to the class under the "advanced" tab...in the case above I picked "RadioButtonOne", just so you know where they came from.  Use whatever names you like there, just make sure they match.  Use the appropriate field numbers for whichever field your radio button is in and you should be good to go.