Drupal 6, adding a admin menu?
You're missing one of either access callback or access arguments:

From the hook_menu() docs:

"access callback": A function returning TRUE if the user has access rights to this menu item, and FALSE if not. It can also be a boolean constant instead of a function, and you can also use numeric values (will be cast to boolean). Defaults to user_access() unless a value is inherited from the parent menu item; only MENU_DEFAULT_LOCAL_TASK items can inherit access callbacks. To use the user_access() default callback, you must specify the permission to check as 'access arguments'

Sorry to paste so much but it's all relevant, the last sentence in particular.

Choose a permission that applies to your site and added it to your menu item:

function kameleon_create_report_menu() {
  $items['admin/reports/orderreport'] = array(
    'title' =&gt; 'Order Report',
    'page callback' =&gt; 'create_report',
    'access arguments' =&gt; array('access content'), // This is almost certainly NOT the permission you want to use, choose one with restricted access.
    'weight' =&gt; 1,
    'type' =&gt; MENU_LOCAL_TASK
  );

  return $items;
}


Also as Attiks points out you've forgotten to return $items from the menu hook.

Finally, simply refreshing the page won't work when you add a menu item (they are cached), so you need to clear Drupal's caches to see the new item.