A. It depends on how dried-out they are. If they're hard like sticks (real sticks, lol), they might be better off as kindling. If there is any life to them at all, say, a modicum of "spring" in them when lightly pinched at the foot, there may be hope.

To answer this question in further detail, please see the article, What's the best method for restoring dry cigars?

If you are able to revive them, keep one thing in mind: chances are they will have lost the original "bouquet" (to use a wine term), they would have had, had they been stored under proper aging conditions.