I have a kenmore dryer and it stopped drying today. What can be the problem and does anyone know how I can fix it.

Model#? Gas or electric?

A great mainy electrical appliances have a reset switch. You'd like to think Sears would put one on all of their dryers but they do not. If this is an electric dryer you may have lost the fuseable link and Sears will be quite happy to drive out an install a new one, for about $90.