> I am trying to mirror a discussion forum that uses
> YaBB as the engine. That program is dynamic but
> doesn't store the data in a database but in a
> directory on the server, refering to the individual
> file to build the html page.

How the site works is irrelavent since all you can get from the public side of
a server is html and related files.

> I know all messages are stored in the folder
> "the_site"/yabb2/12345datafile.txt
> 
> I thought I was getting all the files but have since
> learned I am only getting those on the first page
> and nothing from pages 2 to 32.

Look at the page 1 source. What is the form of the links to page 2.  Most
likely it is either a form or javascript that httrack can't handle.
 
> I have been using +http://forum.site.com/*yabb2*/*
+*/yabb2/* should work just a well.