left click on wmv file=no load...

when i left click on wmv files from my webpage i get a page that looks like this.. http://www.insearchsystems.com/dt.jpg this screen shot was sent to me from someone who got the same looking page while trying to access a regular html file, which works fine for me and other people, i have tested my problem, my friends cannot left click on wmv files with out this garbage coming up, but the html page like in the screen shot works fine for me and multible other people .. also the wmv problem does not happen in internet explorer, any idea?

i also had a similar problem with firefox, and believe it or not, dobby is right, but its not totally true because id rather stick to firefox, but in order to play wmv files normally, your gonna have to use IE