>How can I protect a bunch of files, residing on a specific directory, which is under the Web server branch, by the use of integrated security, without having the user to log in? This is the main issue. I thought about this since a while I was not able to come up with something good.

You really can't unless the user EXCPLICITLY adds the site to their LOCAL INTRANET in which case integrated security will kick in. Won't work with FireFox even then...

You have to log in..

+++ Rick ---