I have been trying like hell to get a voice chat set up between my machine (Mac G4) and a friends' (Windows). I can't seem to use a regular double-jack headset (I think my mic jack has something stuck in it) so I got a usb headset. It appears to work fine, I can record my voice and hear through it and all that. Does the species of headset make a difference in whether you can chat with it or is it still a matter of finding compatable chatware between the two systems?