NEW YORK - Microsoft retires its 12-year-old Windows XP operating system today. Even so, there are still millions of XP computers out there. Here's what to do if you own one of them: What happens ...

Windows XP Mode, one of the most hyped features of Windows 7, was designed to integrate XP with Windows 7 so that you can run XP applications from directly inside Windows 7. Microsoft has touted the ...