http://msmvps.com/blogs/cmullins/archive/2006/10/31/activating-office-2007-on-x64.aspxOffice 2007 has been having Activation Issues, and it took a while, but I found a work-around. It even works on my Windows XP x64 desktop. Read More...enCommunityServer 2008.5 SP2 (Build: 40407.4157)