[Adrian Schneider]

Another method I used:

global.php:
Find:

PHP Code:

// #############################################################################
// check permission to view forum 


Above it add:

PHP Code:

if (is_member_of($bbuserinfo, 8))
{
    $errormessage = "Oops! It appears you aren't welcome here.";
    eval('print_output("' . fetch_template('STANDARD_ERROR') . '");');
} 


where 8 is your banned group