Here is how to get all stores of your Magento instance a an Array:

<?php
$aAllStores = Mage::app()->getStores();
foreach ($aAllStores as $iStoreId => $oVal){
    $sStoreCode = Mage::app()->getStore($iStoreId)->getCode();
    $sStoreName = Mage::app()->getStore($iStoreId)->getName();
    $iStoreId = Mage::app()->getStore($iStoreId)->getId();

    echo $sStoreCode;
    echo $sStoreName;
    echo $iStoreId;
}
?>

To include the admin store you can call getStores like that:

$aAllStores = Mage::app()->getStores(true)

A much simpler way to get all stores is:

$aAllStores = Mage::getModel('core/store')->getResourceCollection()->toOptionArray();