problem with class task bar in W7!

[Rudex]

$ButtonText = "Notepad" ;Change to notepad title
Run("notepad.exe", @WindowsDir, @SW_MINIMIZE)
WinWait("[Class:Notepad]")
$hParent = WinGetHandle("[Class:Shell_TrayWnd]")
$hToolBar = ControlGetHandle($hParent, "", "ToolbarWindow322")

;MsgBox(0, "Warning", "Now we hide the Notepad button on taskbar")

$count = _GUICtrlToolbar_ButtonCount($hToolBar)
For $i = 0 To $count - 1
    $ID = _GUICtrlToolbar_IndexToCommand($hToolBar, $i)

    If StringInStr(_GUICtrlToolbar_GetButtonText($hToolBar, $ID), $ButtonText) Then
        _GUICtrlToolbar_SetButtonState($hToolBar, $ID, $TBSTATE_HIDDEN)
        ExitLoop
    EndIf
Next

Hello, 

This scripts works in windows xp , but i tried in W7 64 and it doesnt work removing the taskbar icon selected from $Buttontext.

I checked with autoIt windows info and it shows MSTaskListWClass1 but it doesnt works. Any way to remove one icon program in taskbar?.

Best Regards.

[Rudex]

Can anyone say me if It is possible remove icon external program from taskbar in Windowns 7??.

Regards.