[TigerWare]

Ok,

How about this.

Hook location: online_location_process

if ($filename == 'yourfile.php')
{
        $userinfo['activity'] = 'yourtitle';
}

and

Hook location: online_location_unknown

if ($userinfo['activity'] == 'yourtitle')
{
        $userinfo['action'] = 'Viewing Your Page'; 
        $userinfo['where'] = '<a href="./yourfile.php?' . $vbulletin->session->vars['sessionurl'] . '">Your Page</a>'; 
        $handled = true;
}

Might need a little tinkering with the bits in red, but I think that should work.