работа с MsWord по средствам com на php

Посмотрите где ошибся...

<?php

$outFormatNumber = 8;
$inFile="C:/123.doc";
$outFile="C:\test.html";


$comObject = new COM("Word.Application");

if (!$comObject)
{
echo("COM object of microsoft word cannot be found. Check COM permissions or Office install");
}


if (!$comObject->Documents->Open($inFile))
{
$comObject->Quit(0);
echo(" cannot be opened by Word");
}


if (!$comObject->ActiveDocument->SaveAs($outFile,$outFormatNumber))
{
$comObject->Quit(0);
echo("MsWord cannot save ");

}

$comObject->Quit(0);

$outFile="test.html";
echo("TEST");



?>

Warning: (null)(): Invoke() failed: Exception occurred. Source: Microsoft Word Description: Ошибка команды in E:\WeB\test\7.php on line 16

Warning: (null)(): PropGet() failed: Exception occurred. Source: Microsoft Word Description: Данная команда недоступна, так как не открыт ни один документ. in E:\WeB\test\7.php on line 23

платформа win2003+iis 6.0+php 4.3.8