Keep your core temperature up and your hand and feet will not get cold. It also takes your body about three days to get used to the cold. It will adapt.
I believe that this is the best piece of advice you can follow. Staying dry is equally important... wet feet will suck the heat right out of you. I carry a sweat suit and sneakers in the truck for the ride home. Also, keeping your house at a cooler temperature is beneficial rather than being accustomed to 80', then going outside.
A few hints from University of Rochester...
Myths and Tips About Dressing for Winter - Online Medical Encyclopedia - University of Rochester Medical Center