Microsoft Office 2010 - including Project Standard 2010, Project Professional 2010 and Visio 2010 use the same volume activation technology as Windows 7 and Windows Vista. If you have already set up a Key Management Service (KMS) host to activate Windows, you can use the same host to activate Office 2010 after a few steps.
You can use the following methods to activate Office 2010 by using Office Activation Technologies, which are the same methods that are used for Windows Vista and later versions of Windows:
For detailed information, see Overview of volume activation for Office 2010 in the technical library.
For information about when you would use each activation method, see the four scenarios described in detail in Volume activation quick start guide for Office 2010 in the technical library.