Refactoring Implicit Interface Implementation into Explicit Interface Implementation

I have inherited a C# code base; there are couple of classes that are implementing multiple interfaces and also have additional public methods. I want to refactor these classes such that implicit interface public methods are refactored to explicit interface implementations so that I can find out easily what additional public methods exisit开发者_运维百科s and can decide something about them accordingly..

Is there (preferably free) refactoring addin (I am using Visual Studio 2010 Ultimate) or tool available that can do this?

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Resharper (although not free) shows an icon when a method implements an interface. If there is no icon it is explicit.