If for whatever reason you need to have the windows open in that room, than keep the door closed and close the register—in other words, separate that room from the rest of the house.

Hope this helps!

Programmable thermostats work, if people use them. The EPA almost canceled its Energy Star labeling for programmable thermostats, because of overwhelming evidence that people weren't using them. EPA decided not to cancel the labeling program, but to focus more on educating homeowners how to use them. And the thermostat manufacturer's are figuring out ways to make programmable thermostats more user friendly. Programable thermostats work, if you use them.

Other things you can do to save energy this winter?

You can air seal your attic and add insulation. Congress, along with the Big Bailout for Wall Street, continued some tax incentives for homeowners who do energy saving retrofits at home. Go to the Web site for the Residential Energy Services Network (RESNET) to find about about the tax incentives and other home performance information that will help you save energy and money.