i need helpppp

[Conspiracy]

hi there

i need help setting up my pc speakers. firstly i have a creative soundblaster audigy 2 ZS platinum pro soundcard. secondly i have creative inspire 5700 digital speakers. how do i connect the two together. i have tried connecting the two via a optical cable however i can only get sound out of the sub, front left and front right speakers. i have tried plugging in a mini jack into the digital out of the sound card and plugging in the black rca into the coaxial input of the amp but to no effect. i have been told that the best connection is a 9 pin
the problem is that i dont have a DIN cable or this converter and am wondering 1 where to get one or 2 what to do to get 5.1 sound out of my speakers :
the other option is a rca to minijack converter- but i think i have tried this ( a mini jack to red and black tv type connectors but this hasn't solved the issue
please help me im in a real pickle
thanks a lot matt

 

[Conspiracy]

http://uk.europe.creative.com/shop/product.asp?category=12&subcategory=0&product=179&

is this what i am after- Digital Jack to Digital DIN and RCA Adapter - 3 Pole
if so "The adapter supports up to 4.1 sound." yet i have 5.1???
and anyway having this cable means id still need a DIN cable - but everyone ive talked to denies their existance.....
what cables do i need to connect the two to get my 5.1 sound working ( and where can i get them from????)

 

[Conspiracy]

found em on ebay all 5 cables for 12.50 posted yeah!!!