No. Windows 7 is based upon Windows Vista but includes new
features, bug fixes, and performance enhancements.
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A new feature for new Vista to actively prevent and remove
spyware is Windows Defender.
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Windows Vista has a few high-end features such as shadow copies
and networking enhancements that Home doesn't have.
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Windows Vista Business has some new features that weren't on
windows XP. These include its automated backup feature, and user
account control. Both these things allow you to do more than you
could previously.