Windows X's Live recommends:
Before and after making any changes to your system: Check Windows for registry errors.
TuneUp Utilities: Clean up your PC and improve your PCs performance - Try now for free!

As expected, Microsoft has released this Thursday the Release Candidate version of its new operating system, Windows 7.  Windows 7 is expected in the final version for the commercial for the end of the year. Meanwhile, the continued development as new features are still emerging. For example, Microsoft showed little mode Windows XP to run Windows applications natively in Windows XP 7 by the inclusion of a layer of virtualization software. It is distinguished by the use of Windows XP applications natively in Windows 7, but switch to an application used to host the virtual machine

For the time remaining, only MSDN and Technet subscribers have access to download the Release Candidate of Windows 7. It will take a little patience for the general public access to public download of Windows 7 RC.