Custom template for specific node in Drupal 6?

I know that there are a ton of different custom template files like page.tpl.php and node.tpl.php etc. But is there a way to create my own template for a specific node identifier? This does not work node -3.tpl.php, but is there a way to do this?

UPDATE CODE

function phptemplate_preprocess_node(&$vars) {
    $vars['template_files'][] = 'node-' . $vars['nid'];
}