Cannot find Resource files with the resource manager for a compiled DLL

Scenario:
Using Visual Studio 2005 VB.NET

1) I have a Class Library that contains only resource files.  Right now, two.  WebResource.resx and WebResource.es-MX.resx.  Both files are set to embedded when compiled.

2) I reference the class library of resources in my Web Site.  Doing so adds a subfolder es-MX with (ClassLibrayName.resources.dll) and within the bin directory ClassLibraryName.dll

I believe this is correct.

In my codebehind is the following code:
            Dim ci As New System.Globalization.CultureInfo("es-MX")
            CurrentThread.CurrentUICulture = ci
            Dim translatedValue As String
            Dim resmgr As New ResourceManager("ClassLibraryName.WebResource", Assembly.GetExecutingAssembly())
            translatedValue = resmgr.GetString("btnTest", ci)

I get the following exception when I call the GetString method:

"Could not find any resources appropriate for the specified culture or the neutral culture.  Make sure "TakeCareResources.WebResource.resources" was correctly embedded or linked into assembly "App_Web_phn3dpvk" at compile time, or that all the satellite assemblies required are loadable and fully signed."

I've been researching this error and tried many things...PLEASE HELP!!!!!!