How to downgrade IE9 under Win7 system to return to IE8

Windows 7 or Vista system users upgrade from IE8 to IE9, no need to uninstall the original IE8 system, Microsoft should use a process of packaging and unpacking, if upgraded, package IE8, if I want to change IE9 back to IE8 to decompress the sealed package.
Since you understand the principle, it is very easy to change IE9 back to IE8. Steps to change back to IE8:

IE9 is for Windows 7 /Windows Vista users, so the following steps need to be performed under Windows 7 or Vista:
1, click the "Start” button, in Type “Programs and Features" in the search box, then click “View Installed Updates in the left pane.
2. Under "Uninstall updates", scroll down to the "Microsoft Windows" section.
3. Right-click on "Windows Internet Explorer 9", click "Uninstall", and then click “Yes&#> when prompted.
4. Click one of the following options:
(1) Restart immediately (Complete the Internet Explorer 9 uninstall process and restore the previous version of Internet Explorer).
(2) Restart later (waiting for you to shut down or restart your computer).