> <http://www.forexfactory.com/misc.php?do=showattachme>
> nts&t=2331
> 
> The icon is a clip and located in the upper right
> corner.

That isn't a link, it's a form:
href="#" onclick="attachments(2331); return false;">7,761 <img
src="images/misc/paperclip.gif"

Httrack doesn't click on forms, and can't handle the javascript
attachments(2331).

Add the URL to start box.