I am attempting to write a program, in C#, that converts some COM DLLs to Interop DLLs (following the instructions in http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlr
fSystemRuntimeInteropServicesTypeLibConverterClassConvertTypeLibToAssemblyTopic.
asp).  

However, when I compile their code fragment, I get the following error :

"error CS0234: The type or namespace name 'LoadTypeLibEx' does not exist in the class or namespace 'ConvertCOMLibraries' (are you missing an assembly reference?)"

In other words, the [DLLImport("oleaut32.dll"... statement has no effect, and a reference cannot be made in the conventional sense to \windows\system32\oleaut32.dll, as this produces the following error :

A reference to c:\windows\system32\oleaut32.dll could not be added.  This is not a valid assembly or COM component.  Only assemblies with extension 'dll' and COM components can be referenced...

Please help?