When going through a deployment with your client, it is important to keep them informed on everything that is happening. This can be done by applying a Build Notification (also know as Legal Notice in Windows) to keep them updated.
Setting the value in the Registry located at:
SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\System->Legalnoticetext
SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\System->legalnoticecaption
will make the Build Notification appear.