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?

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