SlickVic78,
This may work as well
Disabling Export to Microsoft Excel in Internet Explorer
If you do not want users to be able to start Web queries from Internet Explorer, you must disable the menu command from the Windows registry. To do so, in the registry editor, delete the following registry key:
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\MenuExt\Export to Microsoft Excel
get the full story here: *
http://www.microsoft.com/office/ork/xp/five/wgtd04.htm 
Hope this helps some
/JD