7.1 audigy2 soundcard

hi all, i'm really sorry if this doesn't totally fit the topic as it's not specifically about drivers, but my soundcard in general.

basically i bought a soundblaster audigy2 zs 7.1 soundcard, which should have hooked up to my videologic zxr750 7.1 speakers. now i can't get my head round the connectors?!

the input on the speakers, is 8 phonos:

1 = Left Right
2 = Centre Sub
3 = Side Left Right
4 = Rear Left Right

and my soundcard has a digital output or 3x3.5mm jacks, and it's supposed to go something like this...

1 = left, right, rear left
2 = centre, sub, rear right
3 = side left, side right

now its roughly like this, may have got a couple of them mixed up, but how can i go from one 3.5mm jack to 3 phonos?!? i have 1 jack to 2 phonos, which works for 5.1 sound(ish), but i want my full 7.1 :(

all i wanna do is get the 7.1 sound from my soundcard to go into my speakers!!! have you any idea on what splitters/convertors/miracles i need to get this to work. id be so grateful if you have any ideas.

Paul.

on the cd that came with the audigy should be a pdf file with all the various settings and how to set it up correctly.