I am opening a file that opens in Internet Explorer as an Microsoft Excel
spreadsheet. I have microsoft excel 2003 installed on my machine. When I
try and choose Data-Filter, this option is greyed out and I can't filter my
data. However, if I save the spreadsheet and then open it directly in Excel,
I can filter the data. Any ideas? When others open the file it opens it in
Internet Explorer as an Excel spreadsheet and they can choose the filter
option. Is there a setting on this? Thanks