Speaker to be used with PC


I have a desktop PC which PC has what I believe are called 1/8" jacks in back for speaker connectivity. Since I'm starting to build an Itunes Library, I'm considering racheting up to a better speaker system. Worth it or waste? Suggestions, if worth it. Thanx.
lindisfarne
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Buy an external DAC such as an MHDT Labs or PS Audio, or Benchmark and wait to find some Paradigm Active 20's (Active 40's if you can ever find them) and you have a great system. Someone just posted a very similar system recently, I am sure it rocks.
I second Bob's suggestions, however, you are talking high quality with NHT and sound that is on par with most people's main systems.

The Paradigm Active 20's are also a great choice.

Both are main system killers or at least competitive with most mains.
Powered speakers by Audioengines (model 2.0) work great with iTunes.

I also love the Blue Sky EXO connected to an iPod. You can get this at Guitar Center for $200.