[QUantumAnenome]

In WinMain add this.

    SetTimer(hWnd, 0 /* id number */, 120000 /* milliseconds */, NULL);

In WndProc add this.

    switch(iMsg)
    {
    case WM_TIMER:
        if (wParam == 0)
        {
            // your stuff here
        }
        break;
    }