Welcome to Microsoft Windows Seven Forums.
All these features are applied to Windows 7 by default.
To change Windows 7 to classic mode,
1. Click start
2. Select Control Panel->Personalization
3. Choose the “Windows Classic” theme under and high contrast theme
To turn off the taskbar thumbnails refer to the link http://social.technet.microsoft.com/Forums/en-US/w7itproui/thread/44700b7f-15b7-4846-850e-8e3469947724
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