Thanks William for the quick reply. Actually, Drupal does not use HTTP
authentication. It has its own login form. I was hoping that the "Capture URL"
button would analyze this form-based page, but it doesn't seem to work.

Thanks for the tip on filtering out the logout url. I went to "Set options",
"Scan Rules" and excluded the logout url.

This page was also helpful:
<http://httrack.kauler.com/help/CatchURL_tutorial>
I explicitly added the homepage to be indexed first.

Unfortunately, none of these worked. It only captures the unauthenticated
login page form.