2007 -> 2003 XML conversion?

Topics: Developer Forum, Project Management Forum, User Forum
Jun 6, 2007 at 7:29 PM
ExcelPackage can create an Excel spreadsheet and produce an Excel 2003 compatible .xml spreadsheet file from what I understand in reading "Of course, users can download the file for off-line viewing in Excel 2007 or even Excel 2003 file format."

How is this conversion done? Would ExcelPackage be a viable solution on a high concurrency, high load ASP.NET web application? Thanks