public function get($key, $persistent = false)
	{
		if ($persistent) {
			$origKey = $key;
			$key = "PVALUE.$key";
		}

		$key = strtoupper($key);

		if (isset($this->_config[$key]))
		{
			$value = $this->_config[$key];
			if ($value instanceof IProcessParameter)
			{
				return $value->getParameter();
			}
			else
			{
				return $value;
			}
		}
		elseif ($persistent)
		{
			if ($this->get($origKey) != "")
				$value = $this->get($origKey);
			else if ($this->getSession($key))
				$value = $this->getSession($key);
			else
				$value = "";

			$this->setSession($key, $value);
			$this->set($key, $value);

			return $value;
		}
		else
		{
			return "";
		}
	}