The palmpilots come with a cradle and a DB9 connector on it. Use it, since RS232 is so straight forward and is compatable with even the oldest pilots (like my palm personal...512K RAM whoooowee) If the palm follows the 68EZ328 manual, the dragonball drives the infrared directly thru the uart and the pulses are like 1/16 of a 9600 baud bit width (hmmmm...is that right?) anyway, I'm sure the OS adds to that to implement the protocol. tony