http://blogs.technet.com/b/office_resource_kit/archive/2010/12/17/using-the-office-customization-tool-to-install-a-kms-key-for-visio-2010.aspxWe've had questions about whether the Office Customization Tool can be used to install a Key Management Service (KMS) key for a volume licensed version of Visio 2010 Standard. The short answer is yes. Here are the details: The Enter another producten-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)