On Tue, 1 Jan 2002, Gregory Nowak wrote: > I've always thought it was the file extention like iso, zip, gz, exe, com > and so on. But, I guess not. Windows would have you believe that it's all done on file extentions, but yes, mime type is the key here. I was going to suggest application/octet-stream but I've not had a chance to read this list till now. Geoff.