XLGradebook has been developed by Rodney Carr, Deakin University Faculty of Business and Law. It is a standard Microsoft Excel workbook that has a few useful macros added in that make Excel into a better tool for organising and processing students' grades. Macros are used, but it is not an Excel add-in and will not affect your system, including Excel, in any way (except for using up some space on your hard disk). See: www.deakin.edu.au/~rodneyc/xlgradebook.html. The site also has some ideas for marking sheets and ways of providing feedback to students.