How to obtain values from Resources.resx in C#

I have a resource file (Resources.resx) and try to obtain a value using this code:
System.Resources.ResourceManager RM = new System.Resources.ResourceManager("Resources",  System.Reflection.Assembly.GetExecutingAssembly());                     string1 = RM.GetString("wh_user");
Get an error {"Could not find any resources appropriate for the specified culture or the neutral culture.  Make sure \"Resources.resources\" was correctly embedded or linked into assembly \"consX\" at compile time, or that all the satellite assemblies required are  loadable and fully signed."}
Solution Explorer shows the filename as Resouces.resx. Do I need to change it to Resources.resources? That just seems ridiculous. Visual Studio 2008 chose this name on its own so should be able to work with it as is.
What do I ...