> I have firefox setup exactly as the FAQ says, Manual
> Proxy Config, I put in the IP, put in the port, hit
> OK, hit OK again, and then hit the login button, but
> it goes to the next page as if there's no proxy.
> Also, it doesn't capture a URL.

By it goes to the next page, I assume you mean your browser.  At this point
httrack has your login cookies.

Undo the proxy stuff, put the URL into httrack and go.