What is the difference between Excel 2003 and Excel 2007?

You need more than65,000 rows on a worksheet.
Excel2007 allows over a million rows.
You need more than256 columns.
Excel2007 allows over16000 columns.
You do a lot of graphics work and need the new graphics tools and options.
You do a lot of pivot table work and need the new pivot table features in2007 You are receiving workbooks that are Excel2007 workbooks Office XML Formats allow for better data integration between documents and back-end systems.
Also, with Excel XML Formats, you can reduce file sizes, improve data recovery, and increase the interoperability of your spreadsheets with other data sources such as line-of-business systems.
Business dashboards can be easily created from spreadsheets to track key performance indicator.
You can import external data into a spreadsheet by using pre-configured external sources of business information Developers can use the Office Excel2007 calculation engine in other applications, such as a Web-based mortgage calculator or an options pricing