Need suggestions for a USB and digital cable.

I have not tried computer audio but am taking the plunge. I am going to use an HP laptop and I will use Jriver. I got a great price on a Wyred 4 Sound DAC2 and sent it in for the DSDSE upgrade. Now I need to get a USB and a digital cable. I could use some suggestions. I don't really know alot about these cables or how much I will need to spend to get good sound. I need some help! My system is a Rowland Capri preamp, Pass 250.5, and Martin Logan Ascent i speakers.