如果没有安装.NET 3.5 SP1，我可以使用ASP.NET AJAX历史记录吗？

Is it possible to use this feature on a server that only have .NET 2.0 installed? After an initial look into how AJAX history is implemented, I'm not sure it would be easy. I am just curious if anyone knows of a way to do it.Is it possible to use this feature on a server