C＃Remoting / WCF客户端服务器应用程序使用什么通信技术？

I am after so advice really. I have been thinking about a client server project for a while and am going to be using .NET. Originally is was just going to use 2.0 but recently got VS2008 and thought I should really explore 3.5 as well.I am after so advice really. I have been thinki