MS Word error 1120

This is the code in vbs

it works but using word 6 I get that error 
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set pdfcreat=createobject(“PDFCreator.PDFCreatorObj”)
Set fso = CreateObject(“Scripting.FileSystemObject”)
fullPath=“C:”&"prova.doc"
set PDFCreatorQueue=CreateObject(“PDFCreator.JobQueue”)
PDFCreatorQueue.Initialize
pdfcreat.PrintFile(fullPath)
‘pdfcreat.PrintFileSwitchingPrinters fullPath, true

if(PDFCreatorQueue.WaitForJob(10)=false) then
msgbox (“The print job did not reach the queue within 10 seconds”)
end if

set job = PDFCreatorQueue.NextJob
job.SetProfileByGuid(“DefaultGuid”)

’*****add watermark 
job.SetProfileSetting “BackgroundPage.Enabled”, "true"
job.SetProfileSetting “BackgroundPage.File”, "d:\modellinormal\A4_intestata.pdf"
job.ConvertToAsync(fullPath)
'job.ConvertTo(fullPath)


'if(job.IsFinished =False OR job.IsSuccessful=False) then

  ’   msgbox(“Error in process”)
'end if

PDFCreatorQueue.ReleaseCom()