How to reinstall drivers for internal Microphone (Leopard)

My Internal microphone stopped working about the same time I installed Wirecast and Screenflow. Any ideas how I can check that the core audio drivers are installed, or just reinstall them altogether?
I am extremely technical, but not a UNIX guy, so a solid techy answer is welcome.
Thanks in advance,
Dan O

Hello Danny
Have you run Repair Disk Permissions and Restarted your iMac sense downloading the Vara software?
Then if you still have an audio issue use the Vara FAQ / Support to see if they can help!
http://varasoftware.com/support/faq.php
Dennis

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mawch wrote:how to install drivers for ati radeon 3200?and how to config xorg.conf?
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Dragnote,
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