Kathy, you may be suprised to learn that the cause of the drafts you feel is not at the bottom of the house where you feel them, but at the top (attic) were your expensively heated air is escaping to the outside. When the warm air escapes, a slight depres- surization is formed at the lower levels which sucks in cold outside air through every crack and crevice. The solution is not to try to block all these but to reduce the amount of air escaping into the attic. Look for and seal large openings first, such as chimney and utility chases, poorly fitting attic hatch covers, etc. Then you can go for smaller penetrations such as around light fixtures, and around electirc cables and pipes where they come through wall top plates. If you have forced air heating, duct leakage can contribute to the problem, but is harder to diagnose. Take a look at www.weatherization.com for more info.