The latest version of Internet Explorer browser includes support for:

• InPrivate privacy features.
• SmartScreen phishing filter.
• Accelerators - which allow supported web applications to be invoked without explicitly navigating to them.
• WebSlices - which allows portions of page to be subscribed to and monitored from a redesigned Favorites Bar.

download this software for free
Source: http://www.microsoft.com/windows/products/winfamily/ie/default.mspx