Microsoft came up with a fun little tool that will allow you to track down potential security threats from different application.
http://www.microsoft.com/downloads/en/details.aspx?FamilyID=e068c224-9d6d-4bf4-aab8-f7352a5e7d45
The tool is still in beta so there are some oddities but it is very thorough in its analysis of a system and how an application can expose that system to threats. The current version only works on Windows 7 and Windows Server 2008 R2.
The setup is very straightforward.
Once the program is installed it does have to run as an administrator.
