' Modify an NNTP Virtual Directory Metabase Property
strComputer = "."
Set objWMIService = GetObject _
("winmgmts:{authenticationLevel=pktPrivacy}\\" _
& strComputer & "\root\microsoftiisv2")
Set colItems = objWMIService.ExecQuery _
("Select * from IIsNNTPVirtualDirSetting")
For Each objItem in colItems
objItem.VrDoExpire = TRUE
objItem.Put_
Next