I have done a few days of research.
As always, trying to keep the price down, so as to buy a nice set of headphones for apx $200 .
The two products which are withing my budget are the " Nuforce Icon uDac 2" ($130) and the " Fiio E7 USB Dac.( $94 ) Both are external sound cards.The Nuforce has nore choices for outputs, ie, RCA jack , Digital Coaxial and headphone jacks, the Fiio E7 has only a headphone jack.

I spent days on Head-Fi.org reading to get to this point. From reading post over there I found out I have one of the worst sound cards in my PC, a Realtek.
Either unit above should do wonders for my PC / headphone listening experence.