CharliSalsa - 2005-04-04

Please, Do somebody help me fix this error I've 3 days trying to fix it I did those changes, but I still reciving this errors:
$startLimit   = isset($_REQUEST['startLimit']) ? $_REQUEST['startLimit'] : $initStartLimit;
$numberOfRows = isset($_REQUEST['rows'])       ? $_REQUEST['rows']       : $limitPerPage;
$sortOrder    = isset($_REQUEST['sortOrder'])  ? $_REQUEST['sortOrder']  : 'DESC';
$sortBy       = isset($_REQUEST['sortBy'])     ? $_REQUEST['sortBy']     : '';
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Notice: Undefined index: startLimit in D:\Program Files\Apache Group\Apache2\htdocs\DoJoSolutions\Books_Lister.php on line 34

Notice: Undefined index: rows in D:\Program Files\Apache Group\Apache2\htdocs\DoJoSolutions\Books_Lister.php on line 35

Notice: Undefined index: sortBy in D:\Program Files\Apache Group\Apache2\htdocs\DoJoSolutions\Books_Lister.php on line 36

Notice: Undefined index: sortOrder in D:\Program Files\Apache Group\Apache2\htdocs\DoJoSolutions\Books_Lister.php on line 37

Notice: Undefined variable: orderByQuery in D:\Program Files\Apache Group\Apache2\htdocs\DoJoSolutions\Books_Lister.php on line 64

Notice: Undefined index: startLimit in D:\Program Files\Apache Group\Apache2\htdocs\DoJoSolutions\Books_Lister.php on line 167