I have an external microphone plugged into my iMac and it is recognised and works fine in Mac OS X but, it does not work under Windows XP, which I have installed on my iMac through Boot Camp. When I attempt to use Sound Recorder there is simply no sound. I have attempted to enable and to disable mic boost, but that has not worked. I would really like to get my mike to work under Windows XP in addition to Mac OS X. Thank you in advance.