How can i use Dynamic Terrain Loading?

How can i use Dynamic Terrain Loading?

e.g when the player gets close to the edge of the terrain, it loads the next terrain.

Plz help

This is a bit to advanced for you, plus you never bother looking for the answer to questions that you have you just ask them. Someone else has asked this question before hand http://answers.unity3d.com/questions/22561/dynamic-terrain-loading and some one else before that http://answers.unity3d.com/questions/9988/dynamic-terrain-loading so make an effort before wasting server space with your pointless questions