Jay,
The soundcard built into your computer unless it's an after market soundcard such as SoundBlaster or TurtleBeach is just fine for everything other than speech recognition. The microphone you mentioned to me has a good card built into it as it is a high end USB mic. I believe it's also John's mic of choice. If you were to choose a non USB mic you would simply need an external soundcard that you can find on our site under soundcards.