I am using NVIDEA nForce VAPU/ Sonata and have up till now not connected the rear speakers. Apparently I have NVIDIA R nForce TM Audio. (I find all this nVidea stuff a bit confusing to be honest...)

I have noticed that nothing comes out of the center or rear. I have the nvMixer set to 5.1. S

When I run the speaker wizard it tells me that i have got things set up as:
analogue speaker connection
Two speakers
Regular Channel encoding.

What do I need to do in order to get surround sound?

I have tried going to the nvidea webiste, but its very confusing to me!

Any help gratefully received
Thanks
Edward