I'm not sure if this has been asked before or not, but using a Treo 600, does anyone know if it's possible (or is aware of an app) that will allow you to automatically answer a call using speakerphone?

Situation: Using a 3rd party car kit with the Treo 600, and calls seem to only work through the car kit when speakerphone is enabled. Pain in the butt to answer calls normally, and then hit "speakerphone" to transfer the call to the kit.