Embedded Excel 2003 spreadsheet in web page won't work with Excel 2007

[Ed Flecko]

Hi folks,
I have an interactive, Excel 2003 embedded in an .html page. It works
fine as long as you have Excel 2003 on your PC, but it won't work if
you have Excel 2007!

If you have Excel 2007, the page says, "To use this Web page
interactively, you must have Microsoft® Internet Explorer 5.01 Service
Pack 2 (SP2) or later and the Microsoft Office 2003 Web Components."

Does anyone know what's causing this and how I can fix it?

Thanks.