Changing Properties of an activex control

I am a novice and I have an existing program that I am trying to edit.  There is a dialog box that has several buttons that I needed to color.  I found that I could easily create new buttons by inserting an activex control (Microsoft Form Command Button).  After doing so I found that the buttons I changed would no longer enable and diable during program execution like they were supposed to.  The orignal code had a member variable assigned to the button.  That member variable was a CButton type.  I deleted that member variable and put in one with the same name but a CCommandButton type.  Originally the code called in a function called EnablePBs and the ran that through a code

void CR5KDlg::EnablePBs(BOOL bEnable)
{

    m_btnDownload.EnableWindow(bEnable);
    m_btnEraseFlash.EnableWindow(bEnable);
    m_btnSetDateTime.EnableWindow(bEnable);

      int nCmdShow = SW_SHOW;
    if (bEnable)
    {
        nCmdShow = SW_HIDE;
        m_ProgressCtrl.SetPos(0);
        m_stSteps.SetWindowText("");
        m_stPctComplete.SetWindowText("");
    }

    m_ProgressCtrl.ShowWindow(nCmdShow);
    m_stSteps.ShowWindow(nCmdShow);
    m_stPctComplete.ShowWindow(nCmdShow);

}

I have tried changing the code to m_btnname.SetEnabled(bEnable), but that just causes exception errors.  I am not sure exactly what to do to make this work.  PLease Help.