Windows Registry Editor Version 5.00

[-HKEY_CLASSES_ROOT\AVIFile\shellex\ContextMenuHandlers\PlayOnMyTV]
[-HKEY_CLASSES_ROOT\mpegfile\shellex\ContextMenuHandlers\PlayOnMyTV]
[-HKEY_CLASSES_ROOT\WMVFile\shellex\ContextMenuHandlers\PlayOnMyTV]

用這段修改就成功了。