Add bitmap on next button of property sheet wizrad

Hello All,
I am working on Property sheet wizard based application .My problem is that i have to add bitmap to Next ,Back,Cancel buttons of Property sheet.I used CBitmapButton Class and uses follwing approach to add bitmap to buttons.

CButton *btnNext,*btnCancel,*btnHelp;
CBitmaputton btnBmpNext,btnBmpCancel,btnBmpNext;


// Get a handle to each of the existing buttons
btnCancel = reinterpret_cast<CButton *>(GetDlgItem(IDCANCEL));
btnNext = reinterpret_cast<CButton *>(GetDlgItem(ID_WIZNEXT));
btnHelp = reinterpret_cast<CButton *>(GetDlgItem(IDHELP));



LONG GWLNext = GetWindowLong(btnNext->m_hWnd, GWL_STYLE);
SetWindowLong(btnNext->m_hWnd, GWL_STYLE, GWLNext | BS_OWNERDRAW);
BOOL b=btnBmpNext.SubclassDlgItem(ID_WIZNEXT, this);
btnBmpNext.LoadBitmaps(IDB_SCAN_NORMAL, IDB_SCAN_CLICK,
IDB_SCAN_HOT, 0);




LONG GWLCancel = GetWindowLong(btnCancel->m_hWnd, GWL_STYLE);
SetWindowLong(btnCancel->m_hWnd, GWL_STYLE, GWLCancel | BS_OWNERDRAW);
btnBmpCancel.SubclassDlgItem(IDCANCEL, this);
btnBmpCancel.LoadBitmaps(IDB_EXIT2, IDB_EXIT_CLICKED,
IDB_EXIT_FOCUS, 0);

LONG GWLHelp = GetWindowLong(btnHelp->m_hWnd, GWL_STYLE);
SetWindowLong(btnHelp->m_hWnd, GWL_STYLE, GWLHelp | BS_OWNERDRAW);
btnBmpHelp.SubclassDlgItem(IDHELP, this);
btnBmpNext.LoadBitmaps(IDB_SCAN_NORMAL, IDB_SCAN_CLICK,
IDB_SCAN_HOT, 0);
it successfully add bimap to next and cancel button but when i navigate to next page by clicking next button bitmap on next page does not remain on Next button and when i clicked back button the bitmap applied on first page also got vanishes.

How to handle these things as i am newto wizard type applications and doesnt know how to apply bitmap for all pages of propertysheet.

waiting for reply soon as i am struck in my project.

Thanks