Dont Show Forum To User Under A Certain Age

[wolfe]

hi i was woundering if there was a mod out to stop users going in forums above there age rating

like if its a adult jokes forum if the user is under 18 they get an error message and also members get in.

i tried sumit like this as a plug in and got errors

if ($ageinfo = $vbulletin->db->query_first("
SELECT user.age
FROM " . TABLE_PREFIX . "user AS user
WHERE user.userid = $bbuserinfo[userid]"));
{

if ($ageinfo < 101 & $forumid == 19)
{
eval(standard_error(fetch_error('invalidid','You Are Under 18'));
}