Visual Studio: Warn on Missing XML Documentation for Private and Internal Members

Question

I am using Visual Studio 2005 (VS.8.0) and I am looking to enforce the requirement that all class members, not just the public ones, be documented. While trivial to setup Visual Studio to generate warnings when public, protected, or internal protected members are not documented, I am looking for a way to have the private and internal members throw this same warning. Any suggestions?

NOTE: I am using warning level 4, am treating Warnings as Errors, and have the Generate XML flag set.