What network library to use? (C# and XNA) [SOLVED]

Hello everyone, I'm going to start experimenting with networking soon. And I have no idea what kind of library or communication. I'm thinking of starting really simple stuff and in the end (which is my goal in programming) is to make a 2D tile-based mmorpg. So I would need some good and SIMPLE library that will work good with my kind of game. I'm using C# and XNA (with MSVS 2005) to make this game. A crossplatforming library doesn't really mather, at least it works for windows. [Edited by - Iderik on April 1, 2008 5:54:33 PM]