Here is the detail guide telling you how to download, install, and run Prayaya V3.

http://en.prayaya.com/video/how-to-run-prayaya-v3.html

Additionly, here are two guides on Youtube.com.

How to install and run V3

http://www.youtube.com/watch?v=JmwrWSqqb3g

How to install program in V3

http://www.youtube.com/watch?v=6m9KoMy-BuM

NOTE:
If it's too slow to read the online video , Please download the video guide directly from here.