I converted one example from the SAPI SDK to AutoIT, it's not full completed, but the most important things are done ;[INCLUDES]
#include <GUIConstants.au3>
#include <GUIComboBoxEx.au3>
#Include <GuiImageList.au3>
#include <GUIEdit.au3>
;[OPTIONS]
Opt("GUIOnEventMode",1)
;[GLOBALS]
Global $m_bPaused = False, $m_bSpeaking = False
Global Enum Step *2 $SPF_ASYNC, _
$SPF_PURGEBEFORESPEAK, _
$SPF_IS_FILENAME, _
$SPF_IS_XML, _
$SPF_IS_NOT