If you are deploying volume editions of Office 2010 using KMS or MAK activation, the Volume Activation Management Tool (VAMT) 2.0 can be used to manage activation for these products. In this video I walk you through using VAMT 2.0 to activate Office 2010 installations and manage Office 2010 product keys.
If you haven’t already downloaded VAMT 2.0 you can grab a copy here: http://www.microsoft.com/downloads/details.aspx?FamilyID=ec7156d2-2864-49ee-bfcb-777b898ad582
This article on TechNet that walks you through VAMT 2.0 usage. It is focused on Windows activation, but the same steps apply for Office 2010: http://technet.microsoft.com/en-us/library/ff686878.aspx