Visual studio 2012 extensions - Checking Naming conventions

HI,

I am looking for a VS 2012 extensions, which can check for naming conventions in the code (basically the camelCase and PascalCasing) . Looking for Free ones( not the trial/Paid).

Is there a extension available? If not, can the rule be added to Code Analysis tool to check for CamelCase and PascalCase.

How to achieve this?

Thanks