From the Web...sounds about right...
Windows Update vs. Microsoft Update - Free Windows Computer Help
Windows Update vs. Microsoft Update
If you are one of those Windows users that likes to do your own updates rather than letting Microsoft tell you what you need then you may have noticed that there is a Windows Update as well as a Microsoft Update. Now the question is which should you be using and what’s the difference? The answer is it’s up to you and whether or not you want to use one stop shopping for your updates.
Windows Update only does updates for the Windows operating system itself. These updates also include Windows components such as Internet Explorer, DirectX, .NET and Windows Media Player. It also includes security and service pack updates.
Microsoft Update includes all of the items that Windows Update covers as well as other Microsoft products such as Office, SQL and Exchange all in one place. Normally you would have to go to Office Update to do your Office updates and then find the various other updates for other Microsoft products. Microsoft Update is free to use of course and can be applied to your computer simply by visiting the Microsoft Update site. Once you start using Microsoft Update on your computer it will replace Windows Update and take you to the new site even if you click on the Windows Update icon.
“Every atom in your body came from a star that exploded and the atoms in your left hand probably came from a different star than your right hand. It really is the most poetic thing I know about physics...you are all stardust.”― Lawrence M. Krauss
A 1792 U.S. penny, designed in part by Thomas Jefferson and George Washington, reads “Liberty Parent of Science & Industry.”