I had that exact same error a bit up from when you posted. Please take a look at what TECK told me. Your almost done, so do not panic!
As TECK said above(CUT AND PASTING TECK's REPLY):
add this line:
$articleforum = '15, 32, 48';
right after:
include_once( './global.php' );
in your index.php file (TECK, p. 163).
Instead of putting 15, 32, 48....put hte forum number that is your 'news' page.
EDIT: hey Teck, any info on my silly question? I did search the page so