To create Pagination in drupal

To create pagination with drupal.. here is the steps..

$listCount = 10; // Number of list to show

$groups = pager_query('SELECT * FROM {user_groups}',$listCount);

// Render your list here..
while ($group = db_fetch_object($groups)) {
$grname[]= $group;
// Add the rows
....
....
....

}

//then show up the pagination link

$buildHtml .= theme('pager', NULL, $listCount, 0);

---
.....
return $buildHtml;