What is involved in converting an excel spreadsheet into an actual program that can be downloaded from your site? For example and for simplicity sake, think of a calculator that the user could download from your site, install on their pc, enter the desired data and receive the results.
Here is one tool that I developed (not free). It might help other readers. http://www.scriptbaba.com/details-ms-excel-csv-to-mysql-importer-13.html regards