First, it's not a "required" update.. It simply adjusts the autorun/autoplay feature on your computer and helps with security..
http://support.microsoft.com/kb/971029
Effect on end users and end-user software
* Many existing devices in market, and many upcoming devices, use the AutoRun feature with the AutoPlay dialog box to present and install software when DVDs, CDs, and USB flash drives are inserted.
* Users who install this update will no longer receive a setup message that prompts them to install programs that are delivered by USB flash drives. Users will have to manually install the software. To do this, users click Open folder to view the files, browse to the software's Setup program, and then double-click the Setup program to run the program manually.
* Some USB flash drives have firmware that present these USB flash drives as CD drives when you insert them into computers. These USB flash drives are not affected by this update.
Hope this helps.
Grif
Why do I need this update and why is it important? Dan

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