Installed Bluetooth Handsfree kit
The Sony Ericcson HCB-30 Bluetooth handsfree kit works great in my CS. Attached are photographs showing the key pad (very descrete) and the microphone. There's a hidden speaker and a control module. You can dial with voice commands or use the phone's keypad. The phone can stay in your pocket. When you start the car it automatically connects. Very sweet! Connecting to the PCM's 'mute' didn't take (probably needs the resistor that was suggested to step down the signal?); but hitting the mute on the wheel's easy enough. Using a Motorola V600, but it also worked with a Sony Ericcson T68i and a Z600.