Your answer is in the VERY FIRST THREAD in this forum. Why not read it? The first post points you to a thread about unlocking the boot loader, which you ned to do first. The next step on the same post points you to a thread with root method. Happy reading
XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality. Are you a developer?