Thank you DLWebmaestro.
I found two lines with "60" on it. One I'm sure is the one you talked about:
$html -> send_header($ubbt_lang['ONLINE_HEAD'],$Cat,"<meta http-equiv=\"Refresh\" content=\"600;url={$config['phpurl']}/online.php?Cat=$Cat\" />",$user);
I changed to 600
Now would you know what the other line does?:
$Outdated = $html -> get_date() - ($config['onlinetime'] * 60 );
Thank you for your help.