Excel Services Compatibility Checker

Excel Services Compatibility Checker checks for the compatibility of Excel workbooks to Excel services.
After installing, Excel 2007 will have a Ribbon tab called "Excel Services".

This tab contains three buttons that can be used to analyze and fix workbooks.
The first option (Server Compatibility Check) brings up a wizard that allows you to analyze the currently active workbook (the one that has the focus). The second option brings up a wizard that lets you fix multiple files with one fell swoop. The third button (Quick Fix) is a two-click automatic fix option for the workbook.