> Now, there's the problem. No matter which index page
> I try (there's some 7000 of them) I hit a login
> promt, which, when I type in the username and
> password, directs me to the online location. 
> What I find confusing (and see as a small glimmer of
> hope, kind of :)) is that when I use any other index
> page it sends me directly to the login prompt, but,
> when I use the main index page (index.html) it first
> shows the successful login screen for a moment (You
> are now logged in as XXX, please wait while we
> transfer you), and then it sends me back to the
> login screen. 
> 
> 

Interesting.  First thing I thought when I read that was *javascript*.  Also
it may be looking for a cookie that you don't have.  Can you try opening it
with javascript disabled?
When troubleshooting this, do not log in.  I mean, you *can't* actually, but
don't bother going through the motions either.  If you open any of the other
"7000-ish" index pages, can you view the source to see if there is any content
to it other than a login prompt?  You might want to view it in Notepad (sorry,
assuming Windows) or another HTML editor and see if there is a "META REFRESH"
tag or some other scripting mechanism that it taking you away from the page
you are trying to view.