Office 2003 will not view interactive Worksheet saved as a web pa.
 

When Saving an Excel Worksheet as an interative web page using office 2000
and sending it via e-mial, People who have upgraded to office 2003 can open
the pages.

Page states that you need internet explorer 5.0 or above and the office web
components to view the pages.

I've installed the web components and the version of internet explorer is 6.