I created a complex XML file using the Excel Spreadsheet schema,
unaware that users of Excel 2000 would be unable to use it. I am
wondering if there is any way (in .NET) to take this XML file and save
it as an actual Excel file. Since it is already properly formatted,
this shouldn't take much work, right?

I have Office Tools for Visual Studio, but I need to add this to an
existing web project.

Does anyone have any ideas? Thanks for any help at all :-)