Register Office 2007 file format MIME types on servershttp://blogs.technet.com/b/office_resource_kit/archive/2009/06/30/register-office-2007-file-format-mime-types-on-servers.aspxIn order for servers to recognize the new file formats in the 2007 Office system, you will need to register the Multipurpose Internet Mail Extensions (MIME) types for each new file type. If the MIME types are not registered, servers will detect the newen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)