linking to Word doc problem

[J Allen]

I'd like to have a Word doc open up in Word on my website so that people can
modify it and print it out formatted for Word, not as a webpage.

I imported the Word doc and linked to it and this part works fine. However,
after I view the Word doc, and click the browser's Back button, a little
window appears that is titled "Enter Network Password". The text says
"Please enter your authentication information" and has a place for User Name
and Password. I can just click "cancel" and it takes me back to my webpage,
but I don't think users would like this popping up.

Why does this appear? Is there any way to eliminate this "feature"?

Thanks!
Janet