nooby question

what exactly is YAFRAY and where can i get it?

also for some reason i downloaded it and insteled it and nothing hapens when i click on the icon, a smal black box pops up and closes… particular place to instal it maybe?

YafRay is an advanced raytracing renderer. If you are using it in conjunction with Blender (having both programs installed), you can access Yafray from within Blender.

Go to the Render Panel in a Buttons Window, and change the renderer from Blender Internal to YafRay in the drop-down list.