USB on the back of your computer is your best bet. Telex makes several good USB microphones from $15.00 up. A lot of schools use them. from a Google search....."The Telex M-540 USB Desktop Computer Microphone has a focused pick-up pattern significantly reduces background noise, improving audio quality for all voice applications. In contrast, ordinary omni-directional microphones pick up sounds all around, including unwanted background noise. The microphone design not only looks good, it's practical too. The microphone boom can be adjusted in both length and angle to fit your desktop. Place the microphone where it suits you best." This model is $18.95 at www.academicsuperstore.com. There's picture of it there. Ron/TN