I'm trying to attach a headset to my Mac Pro for using with both Skype and other VoIP apps (Teamspeak and Ventrilo, specifically); under both OS X and Windows via Boot Camp. As you may know, the line-in connector for audio on a Mac isn't suitable for connecting most normal PC microphones (and thus, headsets). The technicalities of this escape me, but I've heard a couple of different explanations, including insufficient voltage on the port, and lack of pre-amplification on the input. Either way, the end result is that I can't connect a PC headset. I don't want to use a USB sound adaptor if I can help it; I've read more than enough bad things about the sound quality from these (hiss, beeping and other interference). What would be ideal is if there were some adaptor that works with a microphone minijack and lets me connect any PC microphone (and thus, headsets). Does anybody have any recommendations for something that would work in this instance?