def __init__(self, session):
        Screen.__init__(self, session)
        self.session = session
        self.list = []
        self.servicelist = FindServiceControlListe(self.list)
        self["servicelist"] = self.servicelist
        #self.onShown.append(self.chooseLetter)
        self.currentLetter = chr(SPECIAL_CHAR)
        self.readServiceList()
        self.chooseLetterTimer = eTimer()
        self.chooseLetterTimer.callback.append(self.chooseLetter)
        self.onLayoutFinish.append(self.LayoutFinished)

        self["actions"] = ActionMap(["WizardActions"], {
            "ok": self.select,
            "back": self.cancel,
        }, -1)