browser helper app

["Mark L. Copper" <ad8854 wayne edu>]

I would like for Gnumeric to open .xls files when I click their links in
a browser (I'm using Netscape 4.7). I tried the simplest thing: gnumeric
%s as helper app for Microsoft Excel worksheets.  A similar approach
seems to work (though not perfectly) for Abiword as helper app for Word,
but Gnumeric seems not to repond at all.  Anyone else doing this?

Mark Copper