Maximum PC

Hey all, I have an old Klipsch 5.1 ProMedia theater system with 3 3.5mm line ins and am buying a new computer. I need a soundcard that will allow me to use the 5.1 with 3.5mm (maybe with 3.5mm to RCA cables?). I was looking at the http://www.newegg.com/Product/Product.aspx?Item=N82E16829132010 Asus Xonar Essence SXT, but I'm having a hard time figuring out how to hook up my system with that...

Will I need to get a receiver? I like the HT Omega cards too, but my MoBo only has pcie ports (5 pcie x16 and 1 pcie x1).

Any ideas? Thanks!

If you are a gamer then ASUS Xonar Phoebus would be a nice fit. Otherwise it is still a great all-around sound card. The ASUS Xonar DX 7.1 is also a good option.