Need some help with new sound card

[jjwrest]

Okay so I have these 5.1 speakers, and I just bought a sound card, now it says the graphic card can run 5.1 and its all plugged in and it sounds good, but it would telling me to hook up like the orange subwoofer cord to it and rear and front, do i need to do this for better sound? and if so were could I purchase them

http://i46.tinypic.com/b5qt8p.png

^thats what is says( i wrote in the color of cord it says)

Please help!

Sound Card-http://www.newegg.com/Product/Product.aspx?Item=N82E16829102003

Surround Sound 5.1 speakers-http://www.logitech.com/en-us/product/surround-sound-speaker-z506?crid=47

 

[blitzxgene]

Okay so I have these 5.1 speakers, and I just bought a sound card, now it says the graphic card can run 5.1 and its all plugged in and it sounds good, but it would telling me to hook up like the orange subwoofer cord to it and rear and front, do i need to do this for better sound? and if so were could I purchase them

http://i46.tinypic.com/b5qt8p.png

^thats what is says( i wrote in the color of cord it says)

Please help!

Sound Card-http://www.newegg.com/Product/Product.aspx?Item=N82E16829102003

Surround Sound 5.1 speakers-http://www.logitech.com/en-us/product/surround-sound-speaker-z506?crid=47

According to the logitech website, those speakers should of come with the neccesary cables for 5.1 setup. The green jack would be your front 2 speakers. The black/red would be your sides. The orange would be the sub woofer. If you can't find the cables, just buy 3 3.5mm (also known as 1/8th) to 3.5mm cables and plug the green to green, black to black, etc. In order to have 5.1 sound, you would need to hook up additional cables.