wow! this one did the trick...

wget --user-agent="Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)"
--convert-links --output-file logfile.txt -PPHPBB -r -l1 --html-extension
-Dphpbb.com <http://www.phpbb.com/community/viewforum.php?f=6>

wget --user-agent="Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)"
(obvious)

--convert-links  (makes them local on the pc)
--output-file logfile.txt (log the session to this file)
-PPHPBB (place the files into this folder)
-r (do a recursive download meaning scan the pages for further links)
-l1 (only recurse 1 level)
--html-extension (converts files with content = text/html to .html extension)
-Dphpbb.com (stay in this domain)
<http://www.phpbb.com/community/viewforum.php?f=6>  (this is the URL to mirror)