ADSI / using IADsNameTranslate in C++

Hi,

I am using ADSI api and want to extract Net BIOS name from DNS using C++.
I got following sample from MSDN. But this sample is not compiling. I got following compilation error:
error C2065: 'IADsNameTranslate' : undeclared identifier

I have Included "activeds.h" and "Iads.h" in the header files but still I am not able to get the desired result.

If someone has worked on it then please sent me the working code.

#include "activeds.h"
#include "Iads.h"

int wmain( int argc, wchar_t *argv[] )
{
IADsNameTranslate *pNto;
HRESULT hr;
hr = CoCreateInstance(CLSID_NameTranslate,
NULL,
CLSCTX_INPROC_SERVER,
IID_IADsNameTranslate,
(void**)&pNto);
if(FAILED(hr)) { exit 1;}

hr = pNto->InitEx(ADS_NAME_INITTYPE_SERVER,
CComBSTR("aDsServer"),
CComBSTR("aUser"),
CComBSTR("userDomain"),
CComBSTR("passwd"));
if (FAILED(hr)) { exit 1;}

hr =pNto->Set(ADS_NAME_TYPE_1779,
CComBSTR("cn=jeffsmith,cn=users,dc=Fabrikam,dc=com"));
if(FAILED(hr)) {exit 1;}

BSTR bstr;
hr = pNto->Get(ADS_NAME_TYPE_NT4, &bstr);
printf("Translation: %S\n", bstr);

SysFreeString(bstr);
pNto->Release();
}

Thanks and Regards
Ankur