In my experience, file extension supercedes MIME type in IE. I have noted several cases where servers were misconfigured, and yet IE rendered external files correctly. In one case, it was an ASX file (the ActiveStreaming equivalent of a RAM file). Netscape paid attention to the MIME type, and displayed the text in a browser window. IE launched Windows Media Player. This problem was later solved when the server was correctly configured. It's possible this behavior was based on magic cookies, I suppose. But can they have cookies for every 1 I have also noted that cgi-generated PDF files are not handled correctly in some IE/Acrobat combinations, yet normal PDF files are handled properly. By configuring an alias for the cgi program with a PDF extension, I was able to get IE to launch Acrobat properly. Aaron Justin Nelson wrote: <snip> > **I don't think the actual file extension makes any difference on remote > files** > > Once IE determines that it is responsible for rendering the file directly, > it will show it however it feels appropriate. It will do this by completely > ignoring the MIME type and extension, rendering based on content (exception: > text/html is *always* rendered as HTML, whether or not there are HTML tags).