strComputer = "."
Set objWMIService = GetObject ("winmgmts:{authenticationLevel=pktPrivacy}\\" & strComputer & "\root\microsoftiisv2")

Set objWebService = objWMIService.ExecQuery ("Select * From IISWebService")

arrBindings = Array(0)
Set arrBindings(0) = objWMIService.Get("ServerBinding").SpawnInstance_()
arrBindings(0).IP = "Adresse IP"
arrBindings(0).Port = "Port"
arrBindings(0).Hostname = "Nom"

For Each objItem in objWebService
objItem.CreateNewSite "Test Site", arrBindings,"c:\inetpub\wwwroot"
Next