Are modifications to a recipe needed to use frozen scallops instead of fresh?
Since the original recipe does not say explicitly that the scallops should be cooked from a frozen state, you should thaw them in the refrigerator before making the dish.  Do not precook them&mdash;just thaw them, and cook them as per the recipe.

You will also want to pat them dry with a paper towel or lint free towel, so that they are as dry as reasonably possible.