I found in "Httrack Users Guide":

"This new option is important: you can include query-string 
content when forming the destination filename!

Example: you are mirroring a huge website, with many pages 
named as:
www.foo.com/catalog.php3?page=engineering
www.foo.com/catalog.php3?page=biology
www.foo.com/catalog.php3?page=computing
..


 Then you can use the -N option:

httrack www.foo.com -N "%h%p/%n%[page].%t"


 If found, the "page" parameter will be included after
the filename, and the URLs above will be saved as:

/home/mywebsites/foo/www.foo.com/catalogengineering.php3
/home/mywebsites/foo/www.foo.com/catalogbiology.php3
/home/mywebsites/foo/www.foo.com/catalogcomputing.php3
..."

First of all I would prefer to rename:

/home/mywebsites/foo/www.foo.com/catalogengineering.html
/home/mywebsites/foo/www.foo.com/catalogbiology.html
/home/mywebsites/foo/www.foo.com/catalogcomputing.html

How can I give this option in WinHTTrack? I couldn't find 
it in the options tabs.
And how does it work exactly?Otherwise how to do it in the command line
version?
Sorry if the question is simple, but I am newbie.

ciao