Ever concerned you'll lose the thumb drive where you back up all your important and personal stuff? Or worried someone accidentally finds that embarrassing files collection on your computer? Um, yeah, me neither. The point is we've all got some data that deserves a little extra privacy and protection. While the Enterprise and Ultimate editions of Windows 7 come with BitLocker for securing documents on your system or as they travel with you, those looking for a cost-effective solution can use towards further development.