Headphone Rig for PC?


I just downloaded some 24/96 albums from HDtracks and am thinking about the possibility of a nice headphone setup to play them and others off my PC. I am new to this, so what exactly am I going to need, and does anyone have any Sub-$1000 system suggestions? I am running a Vista OS.

Thanks,
Rocky
rrekstad
That's kind of where I was leaning but I wasn't sure if an additional headphone amp would be necessary. How about the digital connection? I have a silver serpent digital coax, will that suffice?
Kimber makes a great USB cable for about $50. You'll have to spend substantially more ($400) to get much better.