strComputer = "."
Set objWMIService = GetObject _
("winmgmts:{authenticationLevel=pktPrivacy}\\" _
& strComputer & "\root\microsoftiisv2")
Set colItems = objWMIService.ExecQuery _
("Select * From IIsWebService")
For Each objItem in colItems
objItem.AddExtensionFile _
"C:\WINDOWS\system32\bits_update.dll", False, _
"BITSEXT", True, "BITS Update"
Next