如何选择在PyObjC程序中运行哪种Python安装？

I use Python 2.6 more than I use Leopard's default python installation, so I have it set as my main Python installation. But I'd rather use the default Python for a PyObjC program I'm working on. Is there any way to specify to only use it instead of Python 2.6?I use Python 2.6 more than I use Leopard's defa