well, the amount of code is perty small, using something like extra field 3...

but it is large enough to be a 'mod' and best for ubbdev..

summary:

you'll be testing something like:
PHP Code
if ($newthread) {
	if ($user['USER_EXTRA_FIELD_3'] != '1') {
		$postrow[$z]['goto'] = "&gonew=1#UNREAD";
	}
} 

also, you'll need to add it to the user_fields array on line 43, so it gets queried on a per/user basis..

smile