help choosing cable pc to dac.

just checked dac, only one rca and one optical port aval.No optical out on pc.Can i just run 3.5 to dual rca straight to preamp as if it were a tuner?

I take it that your sound card has the 3.5mm output. I see no reason a 3.5mm to dual RCA cable would not work for you. 

Thank you,now do i go cheep or will i benifit from a high quality cable?I am curently pondering on an audioquest cable as they are most commenly stocked.How far far up the chain should i go based on my pc limitations?Thaks again as i think I'm on track now.RW

Personally I wouldn't go crazy on the cable. I'd look for an entry level cable by good manufacturer to connect to the musical fidelity v link.  I would definitely not use the 3.5mm jack.  USB will be far better.  The Cable Co. Has custom lengths available for Kimber V21 digital coax with RCA connectors.  That will cost you $149 for a 5.5 meter run.  There is a V-Link II on Audiogon now for $90 which will handle up to 24/192, so that's a steal!  Pick up a short high quality USB cable such as Kimber's USB Cu for $50 also from The Cable Co.  Total expenditure $300.  Pretty high quality stuff, and getting the benefit of USB out of the computer is great.  Good Luck!

The V-link II for sale is mine. It only goes to 24/92. Though I agree that a USB/SPDIF converter would serve better, it might be that a entry level cable will serve the OPs' objectives regarding background music listening. I bought a 20' cable on E-bay that would suffice for ~$25.