Nevermind.. you make the Content-Type header a application/attachment or something like that.
Problem is, it requires a bit of Perl or something-else code so when a link is clicked on it generates a "new page" that is the file and sends it to your browser with that Content-Type (it may be Content-Disposition). Your browser prompts you with what you want to do with the file. I think this works regardless of browser.
Check out this page for an idea of what I'm talking about.. I realise it's from a mailing list of a guy asking for help, but you can read his code and get the idea.
http://lists.w3.org/Archives/Public/...yJun/0000.html