I appreciate anyone's thoughts on this. I much prefer a wireless keyboard and mouse for my powermac, but I've been disappointed with the way the little USB antenna thing in my powermac seems to lose its connection with the mouse and keyboard on a not infrequent basis. The guy at our local Apple store (not quite a real Apple store - small scale operation) says he can put a chip inside my Powermac for about $80. Any of you know anything about this - whether it works better, whether it is something I could order myself? Thank you for your thoughts.