Exactly!
I have connected them properly. Cant remember the colours now, but the front pair is connected in the middle point and the rear one on the right as you look at the tower from behind.
As i said, when i try Soundman utility, which comes bundled with the mobo, and i click on each individual speaker, i get the correct output!
Its when i try any other software that it wont output to the rear ones. :\