You will want to learn about this toolset if you are planning on doing any Windows 7/Office 2010 deployment projects. I know it (previous version) is a minor element in the Vista/MDT 2008 deployment exam.
“The Office Migration Planning Manager (OMPM) 2010 is a group of tools designed to help administrators during the planning and testing phases of a Microsoft Office 2010 deployment.
OMPM assists administrators in the discovery and compatibility assessment of existing Office documents for migration from the binary document formats (.doc, .xls, etc.) to OpenXML formats (.docx, .xlsx, etc.). Additionally, OMPM 2010 adds features to assess macro compatibility with Office 2010 and 64 bit Office compatibility. The toolkit also contains the Office File Converter (OFC), which enables bulk document conversions from binary to OpenXML formats, and a Version Extraction Tool (VET) to extract saved file versions.
The goal of the tool set is to help administrators understand the number and types of Microsoft Office files in their environment and effectively plan for a smooth rollout of the new version of Microsoft Office.
Refer to the Office Migration Planning Manager reference for further information”.