Go4Expert - Accessing COM objects through ATL

I am attempting to add web browsing capabilities to my win32 application. My problem is that the CoCreateInstance method is returning a 'Class not registered' error. I'm not understanding why it would give me this error when I know that other applications on my machine are using the IWebBrowser2 interface. Here is a sample of my code...

Code:

#define VC_EXTRALEAN        // Exclude rarely-used stuff from Windows headers



/* Class COM Methods */



//#include <afxdisp.h>

#include <comdef.h>

#include <atlbase.h>

#include <exdisp.h>



CComModule   _Module;



#include <atlcom.h>



#include "iexcpp.h"



/* C++ Code */



extern Iex               *pIex;



/*Bfun  ************************* *Efun*/



bool Iex::IexCreateBrowser( char * url )

{

   CComPtr<IWebBrowser2>   lpTBrowser;

   HRESULT                 hrl = 0;



   CoInitialize(NULL);



   //Create web browser using IWebBrowser2...

   hrl = lpTBrowser.CoCreateInstance ( IID_IWebBrowser2 ); 



   if(!SUCCEEDED(hrl))

      return false;



   if( url == NULL )

      return true;

   else

   {  hrl = lpTBrowser->Navigate2( &_variant_t( url ), &_variant_t( NULL ), &_variant_t( NULL ), &_variant_t( NULL ), &_variant_t( NULL ) );

      if(!SUCCEEDED(hrl))

         return false;

      else

      {  lpTBrowser->put_Visible( _variant_t( true ) );

         return true;

      }

   }

}

Any help would be greatly appreciated.