If you are browsing through many safe and unsafe websites BufferZone will be a very very helpful utility for you.
BufferZone is the only security software that creates a separate environment allowing you unlimited freedom to enjoy all Internet activities without the fear of external threats
Features
Safely use all browsers in an isolated (virtualized) zone
Safely chat with all instant messaging programs in an isolated (virtualized) zone
Safely share with all P2P applications in an isolated (virtualized) zone
Safely use USB devices in an isolated (virtualized) zone
No limitation on number of trusted websites in Privacy Zone
Lock your personal files (in a confidential folder) inside a trusted environment
Take a "snapshot" of the Virtual Zone for one- step restore
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You can get BufferZone Pro 3 full version license worth $39.95 for free from Trustware. Trustware is running a holiday giveaway from 1st December 2010 to 1st January 2011. You can download and install the pro version for free from here