I'll make this short. It only took me 2 years on figuring out how to work inputs such as microphone on Bootcamp, Since there's been an issue with drivers for all Windows Operating systems. People are having trouble with their built in microphones to work with other applications such as Skype for instance and even Steam. You may notice that the microphone is only operating well with the Windows Sound Recorder and perhaps with other applications but low in output quality. I've found a fix and I'm happily sharing it with you guys. For some reason, well not to my knowledge... that Apple still hasn't fixed this issue properly yet. Anyhow, I've found these drivers that will work with Windows XP, Windows Vista 32/64bit and even for Windows 7, both editions. http://www.mediafire.com/?mmfmjhtjy0i The file that you will be downloading will be a size of 1.45mb. The folders that you will get within the unziped file will be CirrcusAudioVista32bit, CirrcusAudioVista64bit and CirrcusAudioXP. You will probably ask why the drivers for Windows 7 aren't there, that's what I thought when I first unzipped the folder, but then to my knowledge I ran the compatibility troubleshoot through Vista64bit and it worked like a charm, your computer will ask you to reboot and hopefully your microphone issues will be done and dusted. This will also fix the red LED light issue that is being presented from the headphone jack and any output issues as well. You will know if your microphone drivers are working correctly by not only testing them with other applications but seeing them in 'full' with full driver names, presented like so below: I'm not entirely sure this will work with ALL Macintosh machines, but it's worth a shot if you're still having trouble with this issue. The machine that I personally found the fix on was a late 2009 iMac 27" quad core model bootcamp'd with Windows 7 64bit Ultimate edition.