Ramblings from another nerd on the grid
Microsoft® PowerPivot for Microsoft® Excel 2010 is a data analysis tool that delivers unmatched computational power directly within the software users already know and love — Microsoft® Excel. You can transform mass quantities of data with incredible speed into meaningful information to get the answers you need in seconds. You can effortlessly share your findings with others. You can:
Go get it @ http://www.microsoft.com/downloads/en/details.aspx?FamilyID=e081c894-e4ab-42df-8c87-4b99c1f3c49b.