Karelfd is right..for instance, if budget is no issue, then...
http://www.headphone.com/products/audiophile-desktop/
If you're strapped for cash and are limited to mass market products, these are widely available, sound okay and if you're a Sam's Club member, only $70...
http://www.bose.com/controller?url=/shop_online/speakers/computer_speakers/companion_2/index.jsp
Then there are plenty of solutions that fall in between...for instance...
http://www.zvoxaudio.com/cgi-bin/Make-a-Store.cgi?item=4002215&add=1
Let us know budget, size restrictions, whether you're willing to visit a speciality store to purchase, etc and we can make some further recommendations.
http://www.headphone.com/products/audiophile-desktop/
If you're strapped for cash and are limited to mass market products, these are widely available, sound okay and if you're a Sam's Club member, only $70...
http://www.bose.com/controller?url=/shop_online/speakers/computer_speakers/companion_2/index.jsp
Then there are plenty of solutions that fall in between...for instance...
http://www.zvoxaudio.com/cgi-bin/Make-a-Store.cgi?item=4002215&add=1
Let us know budget, size restrictions, whether you're willing to visit a speciality store to purchase, etc and we can make some further recommendations.