$welcomeMessage = Mage::getStoreConfig('welcomesettings/welcome_message', Mage_Core_Model_App::ADMIN_STORE_ID);
$emailSender = Mage::getStoreConfig('trans_email/ident_general/email', Mage_Core_Model_App::ADMIN_STORE_ID);
$customField = Mage::getStoreConfig('customsettings/custom_field', Mage_Core_Model_App::ADMIN_STORE_ID);In this example, `customsettings/custom_field` is a custom configuration field name, and `Mage_Core_Model_App::ADMIN_STORE_ID` is the store ID. Package library: Magento