> the login info on the proxied browser, it never
> shows "Link captured into HTTrack...." It only says
> "Firefox is configured to use a proxy server that is
> refusing connections." 
This you must fix. Catch URL - disabling IPv6 in Vista -
<http://forum.httrack.com/readmsg/22444/22424/index.html>

> I've also tried the format
> username:password@website.com as
If the page has login fields this will never work.