function computer_info($computer_name,$fields=NULL){
        if ($computer_name==NULL){ return (false); }
        if (!$this->_bind){ return (false); }

        $filter="(&(objectClass=computer)(cn=".$computer_name."))";
        if ($fields==NULL){ $fields=array($this->_group_attribute,"cn","displayname","dnshostname","distinguishedname","objectcategory","operatingsystem","operatingsystemservicepack","operatingsystemversion"); }
        $sr=ldap_search($this->_conn,$this->_base_dn,$filter,$fields);
        $entries = $this->ldap_get_entries_raw($sr);
        
        return ($entries);
    }