I´m Into radio controlled Modellboats. All my radioequipment is from MULTIPLEX. For a couple of years now they offer serial communication between receivers and anything connected to them, e.g. servos. The specification is readily available (Secification in german and english). If I can get the servo data into the PICAXE I want to manipulate them to drive motors, LEDs and so on. Unfortunately I don´t have any idea about the communications part. I red about Hserin and such, but not enough to implement anything.