> When I get httrack to create a mirror of my site, httrack 
> does it perfectly well, except when it comes to copying 
the 
> forum (which runs using a perl script). The problem is it 
> never ends! it makes thousands and thousands of files 
> (there are only 2000 messages at my forum). 
> Is there a quick way to stop this somehow? I'm not very 
> familiar with filters. 

However, this is actually the best solution to avoid that :)

If you want to exclude links such as 
forum.example.com/foo.pl?msg=1234

just define the filter:
-forum.example.com/foo.pl?msg=*

or even more aggressive:
-forum.example.com/foo.pl*

You can also use more than one wildcard:
-forum.example.com/foo.pl?msg=*&foo=1&bar=*