identifier not found error, undeclared identifier

Hi,
I have this code that I am trying to compile, but I am getting the
following errors

'CoInitializeSecurity': identifier not found
'EOAC_NONE' : undeclared identifier

I have pasted the code below:

#include "stdafx.h"
#include "wbemidl.h"
#include <comdef.h>

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

void OnButtonGetinfo()
{
        CoInitialize(NULL);

        if(CoInitializeSecurity( NULL,
                -1,
                NULL,
                NULL,
                RPC_C_AUTHN_LEVEL_PKT,
                RPC_C_IMP_LEVEL_IMPERSONATE,
                NULL,
                EOAC_NONE,
                0)
                != S_OK)
                return;

        IWbemLocator * pIWbemLocator = NULL;
        IWbemServices * pWbemServices = NULL;
        IEnumWbemClassObject * pEnumObject = NULL;

        BSTR bstrNamespace = (L"root\\cimv2");

        if(CoCreateInstance (
            CLSID_WbemAdministrativeLocator,
            NULL ,
            CLSCTX_INPROC_SERVER | CLSCTX_LOCAL_SERVER ,
            IID_IUnknown ,
            ( void ** ) & pIWbemLocator
            ) != S_OK)
                                return;

        if(pIWbemLocator->ConnectServer(
                bstrNamespace, // Namespace
                NULL, // Userid
                NULL, // PW
                NULL, // Locale
                0, // flags
                NULL, // Authority
                NULL, // Context
                &pWbemServices
                ) != S_OK)
                                return;

        HRESULT hRes;
        BSTR strQuery = (L"SELECT * FROM Win32_OperatingSystem");

        BSTR strQL = (L"WQL");
        hRes = pWbemServices-


        if(hRes != S_OK)
        {
                printf("Could not execute Query");
                return;
        }

        ULONG uCount = 1, uReturned;
        IWbemClassObject * pClassObject = NULL;

        hRes = pEnumObject->Reset();

        if(hRes != S_OK)
        {
                printf("Could not Enumerate");
                return;
        }

        hRes = pEnumObject->Next(WBEM_INFINITE,uCount, &pClassObject,
&uReturned);
        if(hRes != S_OK)
        {
                printf("Could not Enumerate");
                return;
        }

        VARIANT v1;
        BSTR strClassProp = SysAllocString(L"NumberOfProcesses");
        hRes = pClassObject->Get(strClassProp, 0, &v1, 0, 0);

        if(hRes != S_OK)
        {
                printf("Could not Get Value");
                return;
        }

        SysFreeString(strClassProp);

        _bstr_t bstrPath = &v1; //Just to convert BSTR to ANSI
        char* strPath=(char*)bstrPath;

        if (SUCCEEDED(hRes))
                printf(strPath);
        else
                printf("Error in getting object");

        VariantClear( &v1 );

        pIWbemLocator->Release();
        pWbemServices->Release();
        pEnumObject->Release();
        pClassObject->Release();
        CoUninitialize();
}

int _tmain(int argc, _TCHAR* argv[])
{
        OnButtonGetinfo();
        return 0;

}

Any help I can get is greatly appreciated. Thank you