vocabulary as a list of links

Hi, i am new to Drupal and I have a problem ... now i m using this code to show vocabulary as a list of links.

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/**
* Lists terms for a specific vocabulary without descriptions.
* Each term links to the corresponding /taxonomy/term/tid listing page.
*/
$vid = 1;
$items = array();

$terms = taxonomy_get_tree($vid, 0, -1, 1);
foreach($terms as $term) {
$items[]= l($term->name, "taxonomy/term/$term->tid");
}
if(count($items)) {
return theme('item_list', $items);
}
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now i need to change the page where currently it shows the node teaser and i need only node title..

please suggest me now wht to do?

Thanks