[thelist] Force Save-As Dialog on CD

Is it possible to force a "save-as" dialog box to appear without using HTTP
headers?

I have a CD that is going to go out to a design firm, and they want the
option of clicking on either a save or open link next to each file. I
discussed them using a rightclick and save, but it appears this is beyond
them.. :) I have done it in the past using headers, but this time I have no
web server, as the are browsing directly off the CD.