> How can we handle password verification that redirects 
user 
> to a different https address?> It's password protected, and it sends the
user to a whole 
> different https site for password verification.

Did you authorize the redirected site using filters?For example if the first
site redirects to www.foobar.com, 
you should use
+www.foobar.com/*

> I tried 
> entering my username and password in Add URL (for both 
the 
> original site and the https site) but the website rejects 
> this, and so no files are downloaded.

Rejects? Errors? Or just the redirect was rewritten as 
external (https://) link?
> The help file 
> recommends copying the right cookie to the project 
> directory, but that does not work either (cookie filename 
> format in IE6 changes as cookie file is moved from 
original 
> Internet Temporary files directory)

No, this is a temporary cookies, and should not be used.