> I set the rules (listed at the bottom of this mail) in 
order
> to accept only files: 
> RecentIssue.jsp
> tocresult.jsp
> abs_all.jsp
> .pdf
> However, WinHTTrack process all files such as
> 'conference.htm' or 'faq.htm'. 

By default, httrack will also accept these files. Just add -
* before all filters to fix that.

> ---- Scan Rules -------
> 
> +*.png +*.gif +*.jpg
...

This should be:

-*
+*.png +*.gif +*.jpg
...