If you are finding that your floors are cold in the winter, you would probably be in the market to have someone come in and insulate your basement walls. Having this done can also help lower your winter heating bills.
When J had his basement insulated last fall, he wasn't sure if it would really make a difference or not. But he found that he saved nearly $50 a month and his house felt more cozy and comfy. He's also noticed that he doesn't have nearly as many spiders, bugs, and little critters invading his home this spring.
Click this link for more information on insulating basement walls.