I’ve been working with many customers lately who are planning to update their version of Office to Office 2010.  One of the biggest considerations is all of the business critical Excel Spreadsheets that.   We have recently published a 22 page whitepaper to cover the considerations and impacts of moving to Excel 2010.  Topics include File formats, 32-bit vs 64-bit, Compatibility tools, Functional Differences, and what happens when you open 2010 spreadsheets in earlier versions of Excel.

http://technet.microsoft.com/en-us/library/ff805054.aspx

Migrating to Microsoft Excel 2010 (white paper)

Published: July 8, 2010

This white paper was developed to aid IT professionals in the process of migrating to Microsoft Excel 2010. This document includes descriptions of the primary functional differences and how those variances might affect workbooks. This paper also includes information about some common issues that may occur during migration and offers solutions where applicable. Additional resources are provided to help diagnose any issues that are not described in this paper.

Download this white paper as a Microsoft Word document (.docx): Migrating to Microsoft Excel 2010 (http://go.microsoft.com/fwlink/?LinkId=196345)