RewriteRule /overview/ /cgi-bin/board.pl?action=overview
     RewriteRule /board/([0-9]+)/(.*) /cgi-bin/board.pl?action=viewboard;boardid=$1;$2
     RewriteRule /thread/([0-9]+)/(.*) /cgi-bin/board.pl?action=viewThread;threadid=$1;$2