How to save excel from webpage?
 

I have a webpage containing a link to a spreadsheet
<a href="somefilename.xls"click</a

When the link is clicked a spreadsheet opens in internet explorer
using some sort of excel COM object.
I would like to enable the user to edit the spreadsheet and then
save the changes in the existing file. How ever IE only offers
"save as" not "save" and it dosent suggest the original filename.
The users already have write acces to the area where the excel
sheet is published. How do i make IE suggest the original filename
or enable the "save" menu??