Microsoft has launched a new help site focusing solely on how to install, reinstall, upgrade or uninstall Windows 7, Windows Vista & Windows XP. If you are now planning to upgrade Windows Vista to Windows 7, this is a great resource!
Its a very exhaustive and helpful resource for those who may be planning to install, re-install, upgrade or un-install Windows 7, Windows Vista & Windows XP.
Check it out!
How to repair install Windows 7 may also interest you.