Browsing under Safety menu or you can press Ctrl + Shift + P key. This action would then launch a new IE8 browser window with InPrivate Browsing turned on.
The visited websites histories, cookies are not maintained and Toolbars and extensions are also disabled by default. This feature can be used while accessing personal information using a public computer. Same like Firefox 3.5 and Google chrome, your ISP or Employers can still track your visited sites.