Okay 3rd time trying to post this message since when you mess up on the file size and press the go back button all your text is lost! arrrgh$!@###!@!.

This is my try at radiosity/true ambience/HDRI..its hard to discern from the 3 since theres no 'end all' tutorials on these subjects.So heres what it consists of ... Spheres with 'poolball' mat,and Slightly bigger 'glass' spheres surrounding them. 155 Radial light dome,and a huge hollow soft white sphere surrounding the whole scene.Not yet fully rendered but you get the idea.

What is this called?How do i get those groovy 'HDRI' reflections?How can i improve this image? I thank you.