For REAL SQ on a pc you will need two things, first a decent sound card, I dont give a crap how nice your onboard is, a descrete DSP will murder onboard any day of the week. Secondly, your speakers. I have the logitech z-5500s paired with a Audigy X-fi Extreme Music. Unbelivable. I know thats alot more than you planned to spend, however logitech makes a 2.1 version of the z-5500s which is they same thing without the center, left rear, and right rear. Dont know what it goes for but that would be what i recommend, and you can get a Audigy2 ZS for like 50 bucks, it doesnt hold a candle to the X-fi but it will kick the shit out of onboard. Klipsch makes some real nice 2.1 solutions also. Depends all on how seriously you take your PC sound. When i heard my z-5500s for the first time i pack up my $600 home sterio system and sold it.