I've tried that, but when I go into QuickTime 7 and record some audio I get ZERO sound. (Yes, I went to Preferences in QT7 and selected "Built-in Input: Line in" as my mic)There is no such thing as a "PC Mic". Just plug a mic into the audio in port (or if it is USB just put in a USB plug) and then go to System Preferences->Sound pane and then select the 'Input' tab (in Sound). Then highlight 'line-in' or the device name if you use a USB mic.
Sorry, , It's a Labtec mic. A cheap 15$ mic I got from Staples.What. Kind. Of. Mic. Do. You. Have.