> I have not tried it, but I had the impression that
> using a command line batch file and any of the
> scheduling services in any operating system could do
> the trick.
> Am I missing something?  I would rather have the
> scheduling outside Httrack.

Right - but many users just do not know how to use 
scheduling services, or even batch files. WinHTTrack 
and httrack have the same options and possibilities, 
the only difference is that WinHTTrack has a front-end 
(GUI) and then pass all options to the internal engine 
(httrack)

Commandline tools are rather difficult to use for many 
users, that's a pitty, but it's a fact..