We'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 product key option in the Licensing and user interface section of the OCT is intended for entering a Multiple Activation Key (MAK) key. You can also use the Enter another product key option (shown below) to enter a KMS key for volume license versions of Microsoft Visio Standard 2010 or Microsoft Visio Professional 2010. Visio 2010 is preinstalled with the Microsoft Visio Premium 2010 KMS client key by default. This enables all the Microsoft Visio Premium 2010 features. However, if you have a license agreement for either Microsoft Visio Standard 2010 or Microsoft Visio Professional 2010, you must install the appropriate KMS client key. The features that are available depend on the key that you install.
For more information, see Deploy Visio 2010 in Deploy volume activation of Office 2010, and the Office Deployment team blog, Volume License editions of Visio 2010 install Premium edition by default.
The following table shows the KMS client keys for Visio 2010 editions. If you have a license agreement for Microsoft Visio Standard 2010 or Microsoft Visio Professional 2010, you can enter the appropriate KMS client key in the OCT when you perform an initial installation of Visio.
KMS client key
Visio Standard 2010
Visio Professional 2010
Visio Premium 2010
To create a Setup customization .msp file to install the Visio KMS key with the OCT:
When you run Setup.exe from the network installation point, Setup looks in the Updates folder for Setup customization .msp file for the product that you are installing.
To learn about the Office Activation Technologies, see Volume activation overview for Office 2010.
For information about how to use the OCT to customize Setup, see Customize Setup before installing Office 2010. This video demonstrates how to use the OCT: Office 2010 client: Office Customization Tool walkthrough (http://go.microsoft.com/fwlink/?LinkId=203127).