Open file dialog box to save static file

I'm looking for a way to do the following I've created a php/mysql site for my wife for various database lists she has. She uses PHP locally on our on web server to add/manage entries but a lot of the pages need to be static and uploaded to a specific site (no PHP/MySQL). So I've give her a link that calls another php page to "generate" and view the static page in the format she requires. She then has to view the source of that page hilight and copy it over the top of the old page on her PC, then upload it to the site. Now... what I would to be able to do is instead of her having to view source etc. I would like to be able to call up a Windows file save dialog box (maybe even going staright to the correct folder) so that the file can just be saved. I can't find anything in the PHP manual about this. Anyone done it or have any ideas? Howard