http://blogs.msdn.com/b/david_leblanc/archive/2010/05/30/dsig-q-amp-a.aspxI'm going to cover the answers to some of the questions that came in after Shelley answered the first round in her post . Q: What will happen if I try to verify a doc signed in 2010 in office 2007/Office 2007 ? A: I'm assuming that the person askingen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)