Upgrade Tools For 4.0 GB

Hi Guys and Gals, I’ve done search after search but not found anything useful. I’m looking for the Upgrade Tools for version 4.0. I believe they are no longer on the product disk. We downloaded what we thought was the upgrade tools (from the UK partnersource) but just got the NDT and Renumber tools. We need the actual upgrade documentation and fobs etc. Before we get in touch with Microsoft can any of you good people help us ? GB Version required and we’re looking at upgrading 3.6 and 3.7 clients to 4.0. Can anybody tell me where these can be found please ? Many thanks in advance