Problem with code in Windows Vista

[dev.cplusplus]

Hi to all, it been a long time since my last time I write/ask in the forum.
I have the problem I hope you can help me:
I’m using the guide:
http://www.codeproject.com/KB/shell/iesaveas.aspx
(Automated IE SaveAs MHTML)
I have the problem when I’m running the code in Windows Vista
In the method:

void CSaveAsWebbrowser::UpdateSaveAs(HWND hwnd)
{
    // editbox : filepath (control id = 0x047c)

    // dropdown combo : filetypes (options=complete page;

    //     archive;html only;txt) (control id = 0x0470)

    // save button : control id = 0x0001

    // cancel button : control id = 0x0002


    // select right item in the combobox
    SendMessage(GetDlgItem(hwnd, 0x0470), CB_SETCURSEL, (WPARAM) m_nSaveType, 0);
    SendMessage(hwnd, WM_COMMAND, MAKEWPARAM(0x0470,CBN_CLOSEUP),  (LPARAM) GetDlgItem(hwnd, 0x0470));

    // set output filename
    SetWindowText(GetDlgItem(hwnd, 0x047c), m_szFilename);

    // Invoke Save button
    SendMessage(GetDlgItem(hwnd, 0x0001), BM_CLICK, 0, 0);  
}

We update the file path and the save type of the Dialog, like:

SendMessage(GetDlgItem(hwnd, 0x0470), CB_SETCURSEL, (WPARAM) m_nSaveType, 0);
SetWindowText(GetDlgItem(hwnd, 0x047c), m_szFilename);

The problem is that we send the control id ‘0x047c’,(for the combo box and the output file), I noticed that the method GetDlgItem(hwnd, 0x047c), return 0, I’m thinking the problem is that the code id '0x047c' in Vista is not relevant, I found out that for NT, Windows 98 and 95 the combobox and output file has different ID ‘0x0480’, I was wandering I someone know where I can found the id’s for Vista, or someone have another idea why this is not working.
Thanks