New features in MSE 2.0:
Windows Firewall integration – During setup, Microsoft Security Essentials will now ask if you would like to turn the Windows Firewall on or off.
Enhanced protection for web-based threats – Microsoft Security Essentials now integrates with Internet Explorer to provide protection against web-based threats.
New protection engine – The updated anti-malware engine offers enhanced detection and cleanup capabilities with better performance.
Network inspection system – Protection against network-based exploits is now built-in to Microsoft Security Essentials.
Option to limit CPU usage during system scan.
to download MSE 2.0.

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