> So say I want to download the pages in this site 
> (http://67-72chevytrucks.com/vboard/forumdisplay.php
> ?f=4)

sub pages are
<http://67-72chevytrucks.com/vboard/showthread.php?s=12928aee3e8aa334e4db0c014b50fe99&t=345243>
a post
<http://67-72chevytrucks.com/vboard/showthread.php?s=12928aee3e8aa334e4db0c014b50fe99&t=345243>
another post
<http://67-72chevytrucks.com/vboard/showthread.php?s=12928aee3e8aa334e4db0c014b50fe99&t=409151>
All constain the same s. So filter
-* +*/showthread.php?s=12928aee3e8aa334e4db0c014b50fe99&t=*