What are the best computer studio speakers?

Question

I have regular computer speakers with my computer right now but I want to upgrade to professional studio speakers. Are there any on the market that will plug into a computer? If yes, what are they?

If no, is there some sort of interface I can buy that would let me plug studio speakers into it and then into the computer?

Answer 1

I'm using SonicXS from EV. They generally make professional speakers but have a small line of computer speakers. Great reviews.
1st link is review
2nd link is manufacturer