What is the newest Dell Latitude laptop that comes with Windows XP?

I like Windows XP and the Dell Latitude series. Where can I get a new Dell Latitude laptop that comes with Windows XP?What is the newest Dell Latitude laptop that comes with Windows XP?I seriously doubt if you can anywhere. I bought my wife a Dell laptop in 2006 and I really had to beg to get windows XP in it. It was going to come with Vista.