Yes, it's true. There are some people that prefer the look of Internet Explorer to the way Firefox looks (though I've never met one). So, I've created this simple How To guide that shows you<sep/>
To run active content (and the build in XML viewer) on your local computer without warnings, you must change a security setting in Internet Explorer. Here's how.
On Vista, I often get an annoying dialog when I click on web links from applications. This is mainly due, I think, to IE/Windows and Firefox fighting over the http launch command syntax. Anyway, getting Firefox to behave properly requires a registry edit.