Thanks for the great replies so far.

Here is a follow-up question.

Is there a mic that I can get for this purpose which would also be good to use a vocals mic on for a singer that is singing through the PA?

For example, would something like this work...

"

Blue Microphones Snowball USB Condenser Microphone, Brushed Aluminum

http://www.walmart.com/ip/Blue-Microphon...uminum/15048440

The Snowball finally provides you with a USB mic that's not only easy to use, but sounds as good on your desktop as it does in a professional recording studio. Whether you're recording a guitar at your kitchen table or a complete band in the studio, the Snowball can capture it with detail unheard of before in a USB mic. The Snowball can handle everything from soft vocals to the loudest garage band, and it's ideal for podcasting.
Blue Microphones Snowball USB Condenser Microphone, Brushed Aluminum:
Plug and play design - no software required
Professional studio quality performance - record both vocals and instruments
Mac and PC compatible
Blue's renowned circuit and unique 2-capsule design
Switchable mic patterns for a variety of recording applications
Includes custom mic stand and USB cable

"

Please send your thoughts, suggestions, and so on.

Thanks.

-- Mark Kamoski