> I would download a very-very large site with
> Httrack, but I don't want overload the server.
> How can I test the website? 
> It is really very large and I don't want download it
> for weeks with 10KB/s, but I don't want to overload
> the server, because I don't know the technical
> background. 

The FAQ is at <http://www.httrack.com/html/abuse.html#USERS>

LARGE sites usually have large bandwidth and large number of users. A normal
PC can't overload it either in bandwidth or number of connections.
The biggest burden is generating dynamic html and making connections. 
So I'd recommend connection/sec=1 and a reasonable download rate. (Unless
you've overrode the security setting your already limited to connections=10
bandwidth=25)
I always run with timeout=60 retry=9