I think a great feature to add is something 
like "Download X levels of external links", where X is 
the number of levels to get from the external link (X 
is a integer, defaulting to 1 level).

This means if you're at www.mysite.com/index.html and 
this html file links to www.cnn.com/bignewstory.html, 
you can tell HTTrack to download X levels from 
www.cnn.com/bignesstory.html.  (Of course, all related 
files such as the gifs/jpgs used by bignesstory.html 
should also be downloaded.)

If this is possible with the current filters, I'd love 
to hear about it.  It is a feature I've seen in other 
website downloaders and would like in this one too.

Feasable?
-hk