yafray does not render,why?

hi guys, while trying to render through yafray it shows me a blnak screen.When i looked at the dos window which opens when we open blender itself it says some thing like the following :
Couldn’t FIND registry key for yafray,is it installed?

Now, what to do ?
help please.

Install Yafray, maybe ? %|

(yafray isn’t included in blender, you have to install it separatly)

i had this problem too… ok im gonna instal yafray

I believe that Yafray also needs Python to be installed as well.

Thanks guys.but then can anyone guide me with installation of python and yafray?
just tell me where to get those.Because first of all i need to install python and then yafray, if i got you people right.

http://www.python.org/download/ http://www.yafray.org/index.php?s=2 or http://www.blender3d.org/cms/Yafray.51.0.html or stfw? %|

Yafray does not need or use python at all. You only need to install yafray.

Thank you.Now i have installed only yafray and its working fine.
Thanks a lot.