Thanks for this. I think I was wondering if HTTP changed its behavior for larger files being downloaded and not displayed. If the browswer defaulted to ftp for the download, I wondered how that could affect me.

Plus I'm looking to get some confidence that I'm approaching the application in a reasonable way. (link to the file rather than handling it directly via cgi.pm) It seems counterintuitive that the host will easily serve a huge download via http, but won't allow it via cgi (up or down - although I'm betting this is a security measure).