> Thanks for the quick reply, but it says
> '/usr/local/bin/webhttrack(12970): could not find
> /usr/local/share/httrack/html' when I run 'webhttrack'

Can you try this:
ln -s ../doc/httrack/html /usr/local/share/httrack/html

(assuming that you have a /usr/local/doc/httrack/html 
directory)

And re-run webhttrack please? This should do the trick 
(I'll have to fix this install bug BTW)