http://blogs.technet.com/b/office_resource_kit/archive/2008/05/27/updated-ork-article-digital-signing-of-documents-in-the-2007-office-system.aspxThe ORK article, Digital signing of documents in the 2007 Office system , has been updated. This article provides information about digital signatures and certificates and how to use them. It includes the following articles: What is a digital signatureen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)