If you have more than a couple of subscriptions with us, you probably have access to the Configuration control panel:
Previously it was a bit tedious to copy and paste in the case senstive machine identity. Now there is a "Existing Customer" link from the default configuration page:
That allows you to put in your ID to immediately add that machine identity to. So it takes just a few seconds to setup machine after machine with the default Webconverger ISO. No special customised ISO required!